Электробезопасность | Тест 24 — тестирование онлайн

Сайт «ТЕСТ 24» предлагает пользователям сайта пройти бесплатную аттестацию по курсу электробезопасности и сдать предварительный экзамен онлайн по системе Олимпокс на группу допуска по электробезопасности.

Билеты по электробезопасности разработаны по новым вопросам Ростехнадзора 2020 года и рассчитаны для «Подготовки и аттестации руководителей и специалистов организаций, осуществляющих эксплуатацию электроустановок» и одобрены министерством образования для «Подготовки и проверки знаний на группу по электробезопасности до и выше 1000 В».

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Тесты Ростехнадзора по электробезопасности 2020 год

ЭБ 1244.2. Проверка знаний персонала организаций требований Правил переключения в электроустановках

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ЭБ 1254.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (II группа по электробезопасности до 1000 В)

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ЭБ 1255.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (II группа по электробезопасности до и выше 1000 В)

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ЭБ 1256.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (III группа по электробезопасности до 1000 В)

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ЭБ 1257.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (III группа по электробезопасности до и выше 1000 В)

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ЭБ 1258.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (IV группа по электробезопасности до 1000 В)

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ЭБ 1259.8. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (IV группа по электробезопасности до и выше 1000 В).

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ЭБ 1260.9. Подготовка и проверка знаний руководителей, специалистов, электротехнического и электротехнологического персонала организаций, осуществляющих эксплуатацию электроустановок потребителей (V группа по электробезопасности до и выше 1000 В)

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ЭБ 1547.3. Подготовка и проверка знаний руководителей, специалистов, электротехнического и электротехнологического персонала организаций, осуществляющих эксплуатацию электроустановок потребителей (V группа по электробезопасности до 1000 В)

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Архив тестов Ростехнадзора по электробезопасности 2019 года

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ЭБ 1254.6. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (II группа по электробезопасности до 1000 В)

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ЭБ 1255.6. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (II группа по электробезопасности выше 1000 В)

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ЭБ 1256.6 Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (III группа по электробезопасности до 1000 В)

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ЭБ 1257.6. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (III группа по электробезопасности выше 1000 В)

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ЭБ 1258.6. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (IV группа по электробезопасности до 1000 В)

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ЭБ 1259.6. Подготовка и проверка знаний электротехнического и электротехнологического персонала организаций, осуществляющего эксплуатацию электроустановок потребителей (IV группа по электробезопасности выше 1000 В).

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ЭБ 1260.6. Подготовка и проверка знаний руководителей, специалистов, электротехнического и электротехнологического персонала организаций, осуществляющих эксплуатацию электроустановок потребителей (V группа по электробезопасности выше 1000 В)

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Тест 24 — электробезопасность

Требования электробезопасности распространяются на все промышленные и не промышленные предприятия. Охрана труда и электробезопасность две составляющие, которые лежат в основе энергетической безопасности и промышленной безопасности.

К эксплуатацию электрооборудования может допускаться только тот персонал, который прошёл специальное обучение и имеет определенный уровень подготовки. Для проверки уровня знаний и подготовки выполняют аттестацию по электробезопасности. Функцию аттестационной комиссии несет Ростехнадзор.

Экзамен онлайн по электробезопасности составлен и разработан по вопросам и темам, которые применяются для самоподготовки по системе Олимпокс, при сдаче экзамена в Ростехнадзор. В экзамене по электробезопасности для руководителей предприятий и для проверки знаний на группу по электробезопасности применялись вопросы из экзаменационной системы Олимпокс за 2020 г.

Аттестация, подготовка руководителей и специалистов промышленных предприятий проводится без регистрации. Тестирование и экзамен онлайн на группу по электробезопасности можно проходить повторно.

Допуск по электробезопасности — 2, 3, 4, 5 группа, проводится комиссией на предприятии с заполнением протокола проверки знаний. Проверка знаний ПТБ и ПТЭ у электротехнического персонала проводится 1 разв год.

Тест на тему: Правила электробезопасности

бюджетное образовательное учреждение Омской области

начального профессионального образования

«Профессиональное училище № 65».

ТЕСТ

Правила электробезопасности

МДК 02.01. Оборудование, техника и технология электросварки

ПМ.02.  Сварка и резка деталей из различных сталей, цветных металлов и их сплавов, чугунов во всех пространственных положениях

 по профессии 150709.02 Сварщик (электросварочные и газосварочные работы)

Составил: Баранов Владимир Ильич                                                                                                             мастер производственного обучения

Седельниково, Омская область, 2013

Правила электробезопасности.

Тест.

Каждый вопрос имеет один или несколько правильных ответов. Выберите верный ответ.

1. От каких факторов зависит действие электрического тока на организм человека?

а)        От величины тока.

б)        От величины напряжения.

в)        От сопротивления тела человека.

2. Какие бывают виды поражения электрическим током организма человека?

а)        Тепловые.

б)        Радиоактивные.

в)        Световые.

3. Имеет ли право электросварщик на подключение сварочного аппарата к сети?

а)        Имеет.

б)        Не имеет.

в)        Подключение производит электротехнический персонал.

4. При какой величине электрический ток считается смертельным?

а)        0,005 А.

б)        0,1 А.

в)        0,025 А.

5. Что означает тепловое поражение электрическим током?

а)        Заболевание глаз.

б)        Паралич нервной системы.

в)        Ожоги тела.

6. Какое по величине напряжение является относительно безопасным?

а)        55 В.

б)        36 В.

в)        12 В.

7. Какие условия повышают опасность поражения электрическим током?

а)        Влага на оборудовании и одежде электросварщика.

б)        Использование при работе резиновых ковриков, калош.

в)        Работа на заземленном сварочном аппарате.

8. Что необходимо предпринять в случае неисправности сварочного аппарата?

а)        Отремонтировать своими силами.

б)        Вызвать электрика.

в)        Доложить о неисправности своему руководителю.

9. Каково максимально допустимое расстояние от рубильника до сварочного аппарата?

а)        5 м.

б)        15 м.

в)        10 м.

10.  Что означает световое поражение электрическим током?

а)        Заболевание глаз.

б)        Паралич нервной системы.

в)        Ожоги тела.

Эталон ответа:

вопрос	1	2	3	4	5	6	7	8	9	10
ответ	а, б, в	а, в	в	б	в	б, в	а	в	в	а

Критерии оценок тестирования:

Оценка «отлично»  9-10 правильных ответов или 90-100% из 10 предложенных вопросов;

Оценка «хорошо»   7-8 правильных ответов или 70-89% из 10 предложенных вопросов;

Оценка «удовлетворительно»  5-6 правильных ответов или 50-69% из 10 предложенных вопросов;

Оценка неудовлетворительно»   0-4 правильных ответов или 0-49% из 10 предложенных вопросов.

Список использованной литературы

1. Галушкина В.Н. Технология производства сварных конструкций: учебник для нач. проф. образования. – М.: Издательский центр «Академия», 2012;
2. Овчинников В.В. Технология ручной дуговой и плазменной сварки и резки металлов: учебник для нач. проф. образования. – М.: Издательский центр «Академия», 2010;
3. Маслов В.И. Сварочные работы6 Учеб. для нач. проф. образования – М.: Издательский центр «Академия», 2009;
4. Овчинников В.В. Оборудование, техника и технология сварки и резки металлов: учебник – М.: КНОРУС, 2010;
5. Куликов О.Н. Охрана труда при производстве сварочных работ: учеб. пособие для нач. проф. образования – М.: Издательский центр «Академия», 2006;
6. Виноградов В.С. Электрическая дуговая сварка: учебник для нач. проф. образования – М.: Издательский центр «Академия», 2010.

90000 Electrical Safety Tests 90001 90002 90003 90002 The following paragraphs and diagrams describe the electrical safety tests commonly available on medical equipment safety testers. Please note that although HEI 95 and DB9801 are no longer current, they are referred to in the text since many medical electronics departments have used them as a basis for local acceptance testing and even routine testing protocols. Protocols based on both sets of guidance are also available on many medical equipment safety testers.90003 90006 90007 90006 6.1 Normal condition and single fault conditions 90007 90002 A basic principle behind the philosophy of electrical safety is that in the event of a single abnormal external condition arising or of the failure of a single means of protection against a hazard, no safety hazard should arise. Such conditions are called «single fault conditions» (SFCs) and include such situations as the interruption of the protective earth conductor or of one supply conductor, the appearance of an external voltage on an applied part, the failure of basic insulation or of temperature limiting devices.90003 90002 Where a single fault condition is not applied, the equipment is said to be in «normal condition» (NC). However, it is important to understand that even in this condition, the performance of certain tests may compromise the means of protection against electric shock. For example, if earth leakage current is measured in normal condition, the impedance of the measuring device in series with the protective earth conductor means that there is no effective supplementary protection against electric shock.90003 90002 Many electrical safety tests are carried out under various single fault conditions in order to verify that there is no hazard even should these conditions occur in practice. It is often the case that single fault conditions represent the worst case and will give the most adverse results. Clearly the safety of the equipment under test may be compromised when such tests are performed. Personnel carrying out electrical safety tests should be aware that the normal means for protection against electric shock are not necessarily operative during testing and should therefore exercise due precautions for their own safety and that of others.In particular the equipment under test should not be touched during the safety testing procedure by any persons. 90003 90006 90007 90006 6.2 Protective Earth Continuity 90007 90002 The resistance of the protective earth conductor is measured between the earth pin on the mains plug and a protectively earthed point on the equipment enclosure (see figure 6). The reading should not normally exceed 0.2Ω at any such point. The test is obviously only applicable to class I equipment. 90003 90002 In IEC60601, the test is conducted using a 50Hz current between 10A and 25A for a period of at least 5 seconds.Although this is a type test, some medical equipment safety testers mimic this method. Damage to equipment can occur if high currents are passed to points that are not protectively earthed, for example, functional earths. Great care should be taken when high current testers are used to ensure that the probe is connected to a point that is intended to be protectively earthed. 90003 90002 HEI 95 and DB9801 Supplement 1 recommended that the test be carried out at a current of 1A or less for the reason described above.90003 90002 Where the instrument used does not do so automatically, the resistance of the test leads used should be deducted from the reading. 90003 90002 If protective earth continuity is satisfactory then insulation tests can be performed. 90003 90030 90031 90003 90033 90034 90035 90036 Applicable to 90037 90036 Class I, all types 90037 90040 90035 90036 Limit: 90037 90036 0.2Ω 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 Yes, at 1A or less.90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes, at 1A or less. 90037 90040 90035 90036 Notes: 90037 90036 Ensure probe is on a protectively earthed point 90037 90040 90065 90066 90030 90068 Figure 8. Measurement of protective earth continuity. 90069 90003 90006 90007 90006 6.3 Insulation Tests 90007 90002 IEC 60601-1 (second edition), clause 17, lays down specifications for electrical separation of parts of medical electrical equipment compliance to which is essentially verified by inspection and measurement of leakage currents.Further tests on insulation are detailed under clause 20, «dielectric strength». These tests use AC sources to test equipment that has been pre-conditioned to specified levels of humidity. The tests described in the standard are type tests and are not suitable for use as routine tests. 90003 90002 HEI 95 and DB9801 recommended that for class I equipment the insulation resistance be measured at the mains plug between the live and neutral pins connected together and the earth pin. Whereas HEI 95 recommended using a 500V DC insulation tester, DB 9801 recommended the use of 350V DC as the test voltage.In practice this last requirement could prove difficult and it was acknowledged in a footnote that a 500 V DC test voltage is unlikely to cause any harm. The value obtained should normally be in excess of 50MΩ but may be less in exceptional circumstances. For example, equipment containing mineral insulated heaters may have an insulation resistance as low as 1MΩ with no fault present. The test should be conducted with all fuses intact and equipment switched on where mechanical on / off switches are present (see figure 9).90003 90030 90080 90003 90033 90034 90035 90036 Applicable to 90037 90036 Class I, all types 90037 90040 90035 90036 Limits: 90037 90036 Not less than 50MΩ 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 Yes 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes 90037 90040 90035 90036 Notes: 90037 90036 Equipment containing mineral insulated heaters may give values ​​down to 1MΩ.Check equipment is switched on. 90037 90040 90065 90066 90030 90068 Figure 9. Measurement of insulation resistance for class I equipment 90069 90003 90002 HEI 95 further recommended for class II equipment that the insulation resistance be measured between all applied parts connected together and any accessible conductive parts of the equipment. The value should not normally be less than 50MΩ (see figure 10). DB9801 Supplement 1 did not recommend any form of insulation test be applied to class II equipment.90003 90030 90123 90003 90033 90034 90035 90036 Applicable to 90037 90036 Class II, all types having applied parts 90037 90040 90035 90036 Limits: 90037 90036 not less than 50MΩ. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 No 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes 90037 90040 90035 90036 Notes: 90037 90036 Move probe to find worst case.90037 90040 90065 90066 90030 90068 Figure 10. Measurement of insulation resistance for class II equipment. 90069 90003 90002 Satisfactory earth continuity and insulation test results indicate that it is safe to proceed to leakage current tests. 90003 90006 90007 90006 6.4 Leakage current measuring device 90007 90002 The leakage current measuring device recommended by IEC 60601-1 loads the leakage current source with a resistive impedance of about 1 kΩ and has a half power point at about 1kHz.The recommended measuring device was changed slightly in detail between the +1979 and 1989 editions of the standard but remained functionally very similar. Figure 11 shows the arrangements for the measuring device. The millivolt meter used should be true RMS reading and should have an input impedance greater than 1 MΩ. In practice this is easily achievable with most good quality modern multimeters. The meter in the arrangements shown measures 1mV for each μA of leakage current. 90003 90030 90172 90068 Figure 11.Arrangements for measurement of leakage currents. 90069 90003 90006 90007 90006 6.5 Earth Leakage Current 90007 90002 For class I equipment, earth leakage current is measured as shown in figure 12. The current should be measured with the mains polarity normal and reversed. HEI 95 and DB9801 Supplement 1 recommended that the earth leakage current be measured in normal condition (NC) only. Many safety testers offer the opportunity to perform the test under single fault condition, neutral conductor open circuit.This arrangement normally gives a higher leakage current reading. 90003 90002 One of the most significant changes with regard to electrical safety in the 2005 edition of IEC 60601-1 is an increase by a factor of 10 in the allowable earth leakage current to 5mA in normal condition and 10mA under single fault condition. The rationale for this is that the earth leakage current is not, of itself, hazardous. 90003 90002 Higher values ​​of earth leakage currents, in line with local regulation and IEC 60364-7-710 (electrical supplies for medical locations), are allowed for permanently installed equipment connected to a dedicated supply circuit.90003 90030 90187 90003 90189 90034 90035 90036 Applicable to 90037 90036 Class I equipment, all types 90037 90040 90035 90036 Limits: 90037 90036 0.5mA in NC, 1mA in SFC or 5mA and 10mA respectively for equipment designed to IEC60601-1: 2005. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 Yes, in normal condition only. 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes, in normal condition only.90037 90040 90035 90036 Notes: 90037 90036 Measure with mains normal and reversed. Ensure equipment is switched on. 90037 90040 90065 90066 90030 90068 Figure 12. Measurement of earth leakage current. 90069 90003 90006 90007 90006 90007 90006 6.6 Enclosure leakage current or touch current 90007 90002 Enclosure leakage current is measured between an exposed part of the equipment which is not intended to be protectively earthed and true earth as shown in figure 13.The test is applicable to both class I and class II equipment and should be performed with mains polarity both normal and reversed. HEI 95 recommended that the test be performed under the SFC protective earth open circuit for class I equipment and under normal condition for class II equipment. DB9801 Supplement 1 recommended that the test be carried out under normal condition only for both class I and class II equipment. Many safety testers also allow the SFC’s of interruption of live or neutral conductors to be selected.Points on class I equipment which are likely not to be protectively earthed may include front panel fascias, handle assemblies etc. 90003 90002 The term «enclosure leakage current» has been replaced in the new edition of the IEC 60601-1standard by the term «touch current», bringing it into line with IEC 60950-1 for information technology equipment. However, the limits for touch current are the same as the limits for enclosure leakage current under the second edition of the standard, at 0.1 mA in normal condition and 0.5 mA under single fault condition. 90003 90002 In practice, if a piece of equipment has accessible conductive parts that are protectively earthed, then in order to meet the new requirements for touch current, the earth leakage current would need to meet the old limits. This is due to the fact that when the touch current is tested from a protectively earthed point with the equipment protective earth conductor disconnected, the value will be the same as that achieved for earth leakage current under normal condition.90003 90002 Hence, where higher earth leakage currents are recorded for equipment designed to the new standard, it is important to check the touch current under single fault condition, earth open circuit, from all accessible conductive parts. 90003 90030 90242 90003 90189 90034 90035 90036 Applicable to 90037 90036 Class I and class II equipment, all types. 90037 90040 90035 90036 Limits: 90037 90036 0.1mA in NC, 0.5mA in SFC 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 Yes, NC only 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes, class I SFC earth open circuit, class II NC.90037 90040 90035 90036 Notes: 90037 90036 Ensure equipment switched on. Normal and reverse mains. Move probe to find worst case. 90037 90040 90065 90066 90030 90068 Figure 13. Measurement of enclosure leakage current 90069 90003 90006 90007 90006 6.7 Patient leakage current 90007 90002 Under IEC 60601-1, for class I and class II type B and BF equipment, the patient leakage current is measured from all applied parts having the same function connected together and true earth (figure 14).For type CF equipment the current is measured from each applied part in turn and the leakage current leakage must not be exceeded at any one applied part (figure 15). 90003 90002 HEI 95 adhered to the same method, however, DB9801 Supplement 1 recommended that patient leakage current be measured from each applied part in turn for all types of equipment, although the recommended leakage current limits were not revised to take into account the changed test method for B and BF equipment. 90003 90002 Great care must be taken when performing patient leakage current measurements that equipment outputs are inactive.In particular, outputs of diathermy equipment and stimulators can be fatal and can damage test equipment. 90003 90030 90293 90003 90189 90034 90035 90036 Applicable to 90037 90036 All classes, type B & BF equipment having applied parts. 90037 90040 90035 90036 Limits: 90037 90036 0.1mA in NC, 0.5mA in SFC. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 No 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes, class I SFC earth open circuit, class II normal condition.90037 90040 90035 90036 Notes: 90037 90036 Equipment on, but outputs inactive. Normal and reverse mains. 90037 90040 90065 90066 90030 90068 Figure 14. Measurement of patient leakage current with applied parts connected together 90069 90003 90030 90334 90003 90189 90034 90035 90036 Applicable to 90037 90036 Class I and class II, type CF (B & BF for DB9801 only) equipment having applied parts. 90037 90040 90035 90036 Limits: 90037 90036 0.01mA in NC, 0.05mA in SFC. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 Yes, all types, normal condition only. 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 Yes, type CF only, class I SFC earth open circuit, class II normal condition. 90037 90040 90035 90036 Notes: 90037 90036 quipment on, but outputs inactive. Normal and reverse mains. Limits are per electrode. 90037 90040 90065 90066 90030 90068 Figure 15.Measurement of patient leakage current for each applied part in turn 90069 90003 90006 90007 90006 6.8 Patient auxiliary current 90007 90002 Patient auxiliary current is measured between any single patient connection and all other patient connections of the same module or function connected together. Where all possible combinations are tested together with all possible single fault conditions this yields an exceedingly large amount of data of questionable value. 90003 90030 90381 90003 90189 90034 90035 90036 Applicable to 90037 90036 All classes and types of equipment having applied parts.90037 90040 90035 90036 Limits: 90037 90036 Type B & BF — 0.1mA in NC, 0.5mA in SFC. Type CF — 0.01mA in NC, 0.05mA in SFC. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 No. 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 No. 90037 90040 90035 90036 Notes: 90037 90036 Ensure outputs are inactive. Normal and reverse mains. 90037 90040 90065 90066 90030 90068 Figure 16.Measurement of patient auxiliary current. 90069 90003 90006 90007 90006 6.9 Mains on applied parts (patient leakage) 90007 90002 By applying mains voltage to the applied parts, the leakage current that would flow from an external source into the patient circuits can be measured. The measuring arrangement is illustrated in figure 18. 90003 90002 Although the safety tester normally places a current limiting resistor in series with the measuring device for the performance of this test, a shock hazard still exists.Therefore, great care should be taken if the test is carried out in order to avoid the hazard presented by applying mains voltage to the applied parts. 90003 90002 Careful consideration should be given as to the necessity or usefulness of performing this test on a routine basis when weighed against the associated hazard and the possibility of causing problems with equipment. The purpose of the test under IEC 60601-1 is to ensure that there is no danger of electric shock to a patient who for some unspecified reason is raised to a potential above earth due to the connection of the applied parts of the equipment under test.The standard requires that the leakage current limits specified are not exceeded. There is no guarantee that equipment performance will not be adversely affected by the performance of the test. In particular, caution should be exercised in the case of sensitive physiological measurement equipment. In short, the test is a «type test». 90003 90002 Most medical equipment safety testers refer to this test as «mains on applied parts», although this is not universal. One manufacturer refers to the test simply as «Patient leakage — F-type».In all cases there should be a hazard indication visible where the test is selected. 90003 90030 90434 90003 90189 90034 90035 90036 Applicable to 90037 90036 Class I & class II, types BF & CF having applied parts. 90037 90040 90035 90036 Limit: 90037 90036 Type BF — 5mA; type CF — 0.05mA per electrode. 90037 90040 90035 90036 DB9801 recommended ?: 90037 90036 No. 90037 90040 90035 90036 HEI 95 recommended ?: 90037 90036 No 90037 90040 90035 90036 Notes: 90037 90036 Ensure outputs are inactive.Normal and reverse mains. Caution required, especially on physiological measurement equipment. 90037 90040 90065 90066 90030 90068 Figure 17. Mains on applied parts measurement arrangement 90069 90003 90006 90007 90006 6.10 Leakage current summary 90007 90002 The following table summarises the leakage current limits (in mA) specified by IEC60601-1 (second edition) for the most commonly performed tests. Most equipment currently in use in hospitals today is likely to have been designed to conform to this standard, but note that the allowable values ​​of earth leakage current have been increased in the third edition of the standard as discussed above.90003 90002 The values ​​stated are for d.c. or a.c. (R.m.s), although later amendments of the standard included separate limits for the d.c. element of patient leakage and patient auxiliary currents at one tenth of the values ​​listed below. These have not been included in the table since, in practice, it is rare that there is a problem solely with d.c. leakage where that is not evidenced by a problem with combined a.c and d.c. leakage. 90003 90002 90003 90484 90034 90035 90036 Leakage current 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Earth 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Earth for fixed equipment 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Enclosure 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Patient 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Mains on applied part 90037 90036 90037 90036 90037 90036 90037 90040 90035 90036 Patient auxiliary 90037 90036 90037 90036 90037 90036 90037 90040 90065 90066 90002 * For class II type CF equipment HEI95 recommends a limit for enclosure leakage current of 0.01mA as per the 1979 edition of BS 5724. 90003 90002 90068 Table 2. Leakage current limits summary. 90069 90003 90006 90007 90006 6.11 Comparison of HEI 95 and DB 9801 Supplement 1 recommendations 90007 90484 90034 90035 90036 90572 Test 90573 90037 90036 90572 HEI 95 90573 90037 90036 90572 DB9801 Supplement 1 90573 90037 90040 90035 90036 Earth continuity 90037 90036 Use test current of 1A or less Limit 0.2ohm 90037 90036 Use test current of 1A or less Limit 0.2ohm 90037 90040 90035 90036 Insulation for Class 1 equipment 90037 90036 Measure between L and N connected together and E using 500v DC tester. Limit> 50MΩ. Investigate lower values ​​90037 90036 Measure between L and N connected together and E using 350v DC tester. Limit> 20MΩ. Investigate lower values ​​90037 90040 90035 90036 Insulation for Class II equipment 90037 90036 Measure between applied parts and accessible conductive parts of the equipment.Limit> 50MΩ. Investigate lower values ​​90037 90036 No recommendation. 90037 90040 90035 90036 Earth leakage current 90037 90036 Measure in normal condition Limit <0.5mA 90037 90036 Measure in normal condition Limit <0.5mA 90037 90040 90035 90036 Enclosure leakage current 90037 90036 Measure in SFC, earth open circuit for Class1, NC for Class-II Limit <0.5 mA for Class1 <0.1 mA for class II 90037 90036 Measure in NC only Limit <0.1 mA 90037 90040 90035 90036 Patient leakage current 90037 90036 Measure from all applied parts connected together for B & BF equipment and from each applied part in turn for type CF. Measure under SFC, eart open circuit for Class 1, NC for classII. Limits: 90628 90629 Class I, B & BF <0.5 mA 90630 90629 Class II, B & BF <0.1 mA 90630 90629 Class I, CF <0.05 mA per electrode 90630 90629 Class II, CF <0.01 mA per electrode 90630 90637 90037 90639 Measure from each applied part in turn, for all types of equipment Measure under NC only Limits 90628 90629 Type B & BF <0.1 mA per electrode 90630 90629 Type CF <0.01 per electrode 90630 90637 90037 90040 90065 90066 90002 90003 90002 90003 90002 90003 90002 90003 90002 90003.90000 PAT (Portable appliance testing) - HSE's answers to popular questions 90001 90002 There are many common myths about portable appliance testing (PAT) - find out the key facts about the inspection and testing of portable electrical equipment here. 90003 90004 What is portable appliance testing? 90005 90002 Portable appliance testing (PAT) is the term used to describe the examination of electrical appliances and equipment to ensure they are safe to use.Most electrical safety defects can be found by visual examination but some types of defect can only be found by testing. However, it is essential to understand that visual examination is an essential part of the process because some types of electrical safety defect can not be detected by testing alone. 90003 90002 A relatively brief user check (based upon simple training and perhaps assisted by the use of a brief checklist) can be a very useful part of any electrical maintenance regime.However, more formal visual inspection and testing by a competent person may also be required at appropriate intervals, depending upon the type of equipment and the environment in which it is used 90003 90004 I've been told that, by law, I must have my portable electrical appliances tested every year. Is this correct? 90005 90002 The Electricity at Work Regulations тисячу дев'ятсот вісімдесят дев'ять require that any electrical equipment that has the potential to cause injury is maintained in a safe condition.However, the Regulations do not specify what needs to be done, by whom or how frequently (ie they do not make inspection or testing of electrical appliances a legal requirement, nor do they make it a legal requirement to undertake this annually). 90003 90004 How frequently do I need to test my electrical appliances? 90005 90002 The frequency of inspection and testing depends upon the type of equipment and the environment it is used in. For example, a power tool used on a construction site should be examined more frequently than a lamp in a hotel bedroom.For guidance on suggested frequencies of inspection and testing, see: Maintaining portable and transportable electrical equipment. 90003 90004 Do I need to keep records of testing and should I label any appliances tested? 90005 90002 There is no legal requirement to label equipment that has been inspected or tested, nor is there a requirement to keep records of these activities. However, a record and / or labelling can be a useful management tool for monitoring and reviewing the effectiveness of the maintenance scheme - and to demonstrate that a scheme exists.90021 90003 90004 Do I need to test new equipment? 90005 90002 New equipment should be supplied in a safe condition and not require a formal portable appliance inspection or test. However, a simple visual check is recommended to verify the item is not damaged. 90003 90004 I have been told that I have to get an electrician to do portable appliance testing work. Is that correct? 90005 90002 The person doing testing work needs to competent to do it.In many low-risk environments, a sensible (competent) member of staff can undertake visual inspections if they have enough knowledge and training. However, when undertaking combined inspection and testing, a greater level of knowledge and experience is needed, and the person will need: 90003 90031 90032 the right equipment to do the tests 90033 90032 the ability to use this test equipment properly 90033 90032 the ability to properly understand the test results 90033 90038 90004 Where can I get more information about maintaining portable appliances used in different environments? 90005 90004 I run a tool hire business? What do I need to do and are there additional responsibilities for the person hiring my tools? 90005 90002 It is strongly recommended that equipment suppliers formally inspect and test the equipment before each hire, in order to ensure it is safe to use.The person hiring the equipment should also take appropriate steps to ensure it remains safe to use throughout the hire period. The question 'What is portable appliance testing?' above gives guidance on what this will entail. 90003 90004 Are there are any case studies about portable appliance testing? 90005 90047 A high street travel agent's approach to PAT 90048 90002 A high street travel agency thought about what it needed to do to maintain its portable electrical equipment.As their work generally included office work and dealing with customers the manager considered that health and safety risks would be generally low. The portable electrical equipment was used in a clean and dry shop by a small number of employees. In deciding what action was needed: 90003 90031 90032 the manager thought about the type of portable equipment that was used in their shop and the level of risk that it might create; 90033 90032 she looked for electrical equipment in the shop and found that there were a number of computers, a fax, two printers and a vacuum cleaner; 90033 90032 she then thought about the likelihood that the items could become damaged: 90031 90032 Computers, printers and faxes were not moved around much and were positioned so that the cables could not become trapped, so the probability that items might be damaged was extremely low.The manager decided that they would be maintained by a visual inspection every 5 years. 90033 90032 The vacuum cleaner was heavily used. The manager remembered that the 90033 90038 90033 90038.90000 Test your electrical safety and maintenance knowledge 90001 90002 Sharpen your skills with our collection of quizzes on electrical safety, maintenance & testing of electrical equipment and industry standards. 90003 90004 90005 ETT Tech Quiz 90006 90002 Each quiz pulls 25 random questions from the ETT Level 2-4 exam pool, providing a good mix of questions for technicians of all levels. 90008 25 Questions. 30 Minutes.90009 90010 Start 90003 90012 90005 ETT Certification Practice Exams 90006 90002 Each exam level covers the criteria found in the 90008 NETA ETT Study Guide 90009. 90003 90019 90005 Protective Relay Quiz 90006 90002 Sharpen your knowledge of protective relays and the procedures involved with testing and maintenance. 90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90027 90005 Circuit Breaker Quiz 90006 90002 See how much you know about circuit breakers with this short quiz on their principles, safety, operation and maintenance.90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90035 90005 Transformers Quiz 90006 90002 How much do you know about transformer principles, safety and maintenance? 90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90005 Grounding & GFP Quiz 90006 90002 Quiz yourself on grounding principles and ground fault protection systems testing and maintenance.90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90050 90005 Emergency Systems 90006 90002 Quiz yourself on emergency, legally required, and optional standby system standards testing and maintenance. 90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90058 90005 ANSI / IEEE Device Number Quiz 90006 90002 There are close to 100 device numbers, can you name them all? This short quiz will help you remember the ones that you will encounter most on the job.90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90066 90005 ANSI / IEEE Device Number Quiz 90006 90002 There are close to 100 device numbers, can you name them all? This short quiz will help you remember the ones that you will encounter most on the job. 90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90074 90005 Electrical Safety Quiz 90006 90002 Check your knowledge of electrical safety including NFPA and OSHA standards, confined space, arc-flash and safe work practices.90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90082 90005 Basic Electricity Quiz 90006 90002 Great for beginners and trainees. See how much you know about basic electrical theory with this short quiz. 90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90090 90005 Advanced Electricity Quiz 90006 90002 Challenge yourself with this short quiz on advanced electrical theory and principles.90008 25 Questions. 30 Minutes. 90009 90010 Start 90003 90002 90005 Comments 90006 90003 90002 11 total comments 90003 All comments (11) Login or Register to comment. 90104 90105.90000 Electrical Safety 90001 90002 Live parts to which an employee may be exposed must be deenergized before the employee works on or near them unless deenergizing the parts introduces additional or increased hazards or is unfeasible due to equipment design or operational limitations. Examples of increased or additional hazards include interruption of life support equipment, deactivation of emergency alarm systems, shutdown of hazardous location ventilation equipment, or removal of illumination for an area.Live parts that operate at less than 50 volts to ground need not be deenergized if there are no increased exposures to electrical burns or to explosions due to electric arcs. 90003 90004 Deenergized Parts 90005 90002 When employees work on deenergized parts or near enough to them to expose the employees to any electrical hazard they present, the following safety related work practices must be followed: 90003 90008 90009 Treat as energized any conductors and parts of electrical equipment that have been deenergized, but have not been properly locked out or tagged.90010 90009 While any employee is exposed to contact with parts of fixed electric equipment or circuits which have been deenergized, the circuits energizing the parts shall be locked out or tagged or both. In addition, electrical hazards must be controlled; a qualified person must test the circuit to verify deenergization from all voltage sources. 90010 90009 Safe procedures for deenergizing circuits and equipment must be determined before circuits or equipment are deenergized. All electric energy sources must be disconnected.Control circuit devices, such as push buttons, electric switches, and interlocks must not be used as the sole means of deenergizing circuits or equipment. Interlocks must not be used as a substitute for lockout and tagging procedures. 90010 90015 90004 Energized Parts 90005 90002 Employees are considered working on or near exposed energized parts when working on exposed live parts either by direct contact or contact be means of tools or materials or when working near enough to energized parts to be exposed to any hazard they present.Only qualified persons are permitted to work on electric circuit parts or equipment that have not been deenergized (lockout / tag out). Qualified persons are capable of working safely on energized circuits and are familiar with the proper use of special precautionary techniques, personal protective equipment, insulating and shielding materials, and insulated tools. 90003 90020 90021 90022 90023 90020 90021 90022 90023 90028 90029 Approach distances for qualified person to alternating current 90030 90003 90032 90033 90022 90035 90028 Voltage Range (Phase to Phase) 90003 90032 90035 90028 Minimum Approach Distance 90003 90032 90033 90022 90035 90028 300V and less 90003 90032 90035 90028 Avoid contact 90003 90032 90033 90022 90035 90028 Over 300V, not over 750V 90003 90032 90035 90028 1 foot 90003 90032 90033 90022 90035 90028 Over 750V, not over 2kV 90003 90032 90035 90028 1 ft.6 in. 90003 90032 90033 90022 90035 90028 Over 2kV, not over 15kV 90003 90032 90035 90028 2 feet 90003 90032 90033 90022 90035 90028 Over 15kV, not over 37kV 90003 90032 90035 90028 3 feet 90003 90032 90033 90022 90035 90028 Over 37kV, not over 87.5kV 90003 90032 90035 90028 3 ft. 6 in. 90003 90032 90033 90022 90035 90028 Over 87.5kV, not over 121kV 90003 90032 90035 90028 4 feet 90003 90032 90033 90114 90115 90032 90033 90114 90115 90004 Overhead Lines 90005 90002 When work is to be performed near overhead lines, the lines must be deenergized and grounded, or other protective measures taken before the work is started. Such protective measures, such as guarding, isolating or insulating, shall prevent the qualified person performing the work from contacting the lines with any part of their body or indirectly through conductive material, tools, or equipment.90003 90002 Unqualified persons working in an elevated location near overhead lines are not allowed to come closer or to handle the conductive objects which may contact or come closer to any unguarded, energized overhead line than the following distances: 90003 90020 90021 90022 90035 90028 90029 Voltage to Ground 90030 90003 90032 90035 90028 90029 Distance 90030 90003 90032 90033 90022 90035 90028 50kV or below 90003 90032 90035 90028 10 feet 90003 90032 90033 90022 90035 90028 Over 50kV 90003 90032 90035 90028 10 feet (plus 4 in.for each 10kV over 50kV) 90003 90032 90033 90114 90115 90002 Unqualified persons working on the ground in the vicinity of overhead lines are not allowed to bring a conductive object or any insulated object which does not have the proper insulating rating closer to unguarded, energized overhead lines that the distance specified above. 90003 90002 Qualified persons working in the vicinity of overhead lines, whether in an elevated position or on the ground, are not allowed to approach or take any conductive object without an approved insulating handle closer to exposed energized parts that in the table above, Approach Distance for Qualified Persons, unless a.) The person is insulated from the energized part by using the proper gloves, with sleeves if necessary, rated for the voltage involved, or b.) The energized part is insulated from all the person, or c.) The person is insulated from all conductive objects at the potential different from the energized part. 90003 .