GE Industrial Solutions SDCJBBC - Manual (Page 7)

GEH-704 Installation Instructions
Important: Modbus links (microEntelliGuard ™ may not be
directly connected to Commnet links (MicroVersaTrip ® ).
Commnet connections must run through a Modbus
concentrator before connected to a Modbus signal.
Zone Selective Interlock (ZSI)
The ZSI signals are connected to terminals 8-11 (Refer
back to Figure 4 for terminal connector reference
#’s). The ZSI inputs and outputs are used to setup
coordination with other breakers. The interface
between the Spectra RMS breaker and additional
breakers is accomplished through the TIM1 module.
Ground Fault Alarm (GFA)
If the unit is configured for GFA, terminals 14 & 15
(Figure 4) are used to indicate the ground fault.
These terminals are dry contact outputs with a 1
amp maximum capability. If the unit does not have
ground fault, terminals 14 & 15 (Figure 4) are used as
a programmable alarm output. The 1 amp maximum
applies in this situation also.
Reduced Energy Let-Through (RELT)
The RELT system is used to put breakers in a
reduced energy mode for service and preventative
maintenance. RELT has an input and an output. To enter
RELT mode, 24 volts (AC or DC) is applied to terminals
12 & 13 (Figure 4). If DC is used, observe the polarity
markings on the Advanced Distribution Junction Box.
Terminals 16 & 17 (Figure 4) provide a dry contact
output signal to indicate RELT mode has been activated.
These are 1 amp maximum dry contacts.
If RELT is not optioned in the breaker the RELT
signals can be used as programmable inputs and
programmable outputs to the breaker.
The Advanced Distribution Cable Junction Box also
contains two 12-pin plug connectors and one 20-pin
connector. To connect a Spectra
® RMS Molded-Case
Circuit Breaker to the Advanced Distribution Cable
Junction Box, align the 20-pin breaker receptacle
interlock connector with the mating “BREAKER” plug
hook connector of the Advanced Distribution Cable
Junction Box and lock the two hinged interlocks into the
connector (See Figure 6).
Figure 6. Side view of breaker cable-junction box insertion and
attachment.
To connect a Distribution Cable Harness (12-pin) to the
Advanced Distribution Cable Junction Box, insert the
receptacle into the plug until the interlock and hook
catch (see Figure 7). The 12-pin connectors are keyed
so they cannot be inserted incorrectly into a mating
12-pin receptacle connector. To disconnect from the
Advanced Distribution Cable Junction Box, press down
at the rear of the receptacle interlock until the interlock
clears the plug hook and withdraw the receptacle
interlock (see Figure 9).
Figure 7. Side view of a receptacle-plug connection insertion.
Note: If the Distribution Cable Harness has a plastic
hinge on the strain relief, then cut this hinge off, as it
will interfere with other Junction Box Connectors (see
Figure 8).