Electrical installation guide: technical solutions Schneider Electric Heads of H, J

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Section H. Low-voltage switchgear

1. The basic functions of LV switchgear

1.1 Electrical protection

1.2 Isolate (shutdown)

1.3 Control

2. Switchgear

2.1 Simple switching device

2.2 Combined switchgear

3. Choice of switchgear

3.1 Summary of features

3.2 The choice of switchgear

4. Circuit Breaker

4.1 Standards and description

4.2 Main characteristics of the circuit breaker

4.3 Other features of the circuit breaker

4.4 Selection of the circuit breaker

4.5 Approval of the characteristics of circuit breakers

4.6 Selective disconnection of the transformer substation to the consumer

Section J. Surge

1. General Provisions

1.1 What is the overvoltage?

1.2 Four types of surge

1.3 Main characteristics of the surge

1.4 Different propagation modes

2. Surge Protector

2.1 Primary protection devices (lightning: IEPF)

2.2 Secondary protection devices (IEPF internal lightning protection equipment)

3. Standards

3.1 Description of the device for overvoltage protection

3.2 Standards

3.3 Data on the device for overvoltage protection on standard IEC 61643_1

3.4 devices installation standards for overvoltage protection

4. Selection of protection devices

4.1 Risk Assessment for overvoltage protected object

4.2 Selection of capacity for surge protection devices (low-voltage network)

4.3 Selection of devices for surge protection, depending on the grounding scheme (see. Fig. J23)

4.4 Selecting the switch

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Electrical installation guide: technical solutions Schneider Electric