RFL Electronics RFL 9300 - Figure 11-1. RFL 93 B ACT I;O Auxiliary Current Transformer I;O Module

SECTION 11: AUXILIARY CURRENT TRANSFORMER I/O MODULE
TB4
A
C
T
1
2
Figure 11-1. RFL 93B ACT I/O Auxiliary Current Transformer I/O Module
11.1 DESCRIPTION
Each RFL 9300 contains four RFL 93B ACT I/O Auxiliary Current Transformer I/O modules (Fig. 11-1) These
I/O modules monitor the currents being passed to them by the current transformers (CT's) on the protected line,
and pass these currents on to the phase controller modules (Section 12).
11.2 CONTROLS AND INDICATORS
Figure 11-2 shows the location of all controls and indicators on the RFL 93B ACT I/O Auxiliary Current Trans-
former I/O Module. These controls and indicators are described below. Only the rear-panel terminal block (TBX)
is accessible with the RFL 93B ACT I/O installed in the RFL 9300 chassis; all others are only accessible when
the RFL 93B ACT I/O is either removed from the chassis, or placed on a card extender.
TERMINAL BLOCKS
TBX Connecting point for input leads from the current transformer on the protected line.
TEST TURRETS
TP1 Monitoring point for the A1 AUX IN line.
TP2 Signal ground.
TP3 5-volt return (ground).
TP4 Monitoring point for the DC RESTORE line.
RFL 9300 RFL Electronics Inc.
March 26, 1999 11 - 1 (973) 334-3100