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Overview

This section describes the procedure for activating the voltage supply lines via the

PI/100 units. Please observe the order of the steps described below.

NOTE: If "breaker-less" PIs (PI/100 NOCB) are used, the system must be switched on

or off via an external equipment (e.g. Power Distribution Panel (PDP) with circuit

breakers). More information is given in section

(p.

5-6).

Required equipment

Prior to performing this task, the following equipment must be available:

1. Multimeter

2. Small pen or small Phillips screwdriver.

Prerequisites

Prior to performing this task, make sure that the circuit breakers on both PI/100 units

are in the OFF position (="O") (see

Procedure

Proceed as follows to switch on and test the voltage supply lines:

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Insert a 125 A fuse for each supply line into the external Battery Distribution and Fuse

Bay (BDFB). If circuit breakers are being used in the BDFB, put both of them in the

ON position.

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Use a multimeter to check the primary voltage at the Power Distribution Panel (PDP)

for both power supply feeders, and enter the measured values in the table provided in

chapter 6.

Use the following four pairs (multimeter connection points) for the measurement (see

Figure 4-2, "PDP connection (power input cables)" (p.

1. –A1/rtnA1

2. –B1/rtnB1

3. –A2/rtnA2

4. –B2/rtnB2.

5-4

Figure 5-1, "PI/100 switching" (p.

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