Lucent Technologies Lineage
®
2000 400A, 60Hz Ferroresonant Rectifier J85503C-3
Issue 10 July 2000
Testing 6 - 3
Test Load
Connection
Use the following procedures to connect a test load when called for in a
test or other procedure. Test load connections are made on the internal
bus of the rectifier. Therefore, to isolate the rectifier from the batteries
and plant bus, the rectifier DC Output circuit breaker must be left open
(off) while the test load is connected.
1. At the ac service panel, remove ac power to the rectifier.
2. Turn off (down) the rectifier CB1 circuit breaker.
Warning: Support the CM4 interface board with your hands when
disconnecting the cable leads or damage to the interface board may
result. Do NOT disconnect plant control cable connector J5A from
interface board CM4 by pulling the cable.
3. Disconnect J5A from CM4 by unlatching first, then pulling the
cable connector.
4. Refer to Figure 5-3 and connect the test load between the input bus
to circuit breaker CB1 (labeled Test Load) and any convenient
point on the ground bus anywhere in the plant. Use 24 AWG
multiconducting wire and 40-pin female connector from AMP,
Inc., Harrisburg, Pa. Cable will then plug into P5A connector on
CM4 board. For example, the wire coming from PH (shown
above) must be terminated on pin 12 of the new connector and RS
on pin 34, etc. The suggested AMP hardware part numbers are:
5. Terminate the remaining 4 extension wires outside the brace in
miniature alligator clips color-coded as shown in Table 6-A.
Table 6-A: Test Set Connections
Test
Clip
Connection
Figure Voltage
Red
E13 on CM2 (positive side of capacitor C4)
6-3
+27V
Black
E14 on CM2 (negative side of capacitor C4)
6-3
GRD
Blue
Cathode of diode CR56 on CM2
6-3
-V
White
E25 on CM1
6-2
+V
Description
Quantity
Part Number
Housing
1
102398-8
Cover
1
102537-8
Cover
1
102536-8