GE Industrial Solutions SDCJBBC User Manual
GE Energy
Industrial Solutions
GEH-704 Installation Instructions
Advanced Distribution Cable
Junction Box
For Spectra® RMS Molded-Case Circuit Breakers
TM
with Advanced Feature microEntelliGuard
Trip Units
For Catalog Number SDCJBBC
Circuit Breaker Accessory
Overview
The General Electric Advanced Distribution Cable
Junction Box is a modular connector used to provide
quick, easy and reliable attachment of Spectra
Molded-Case Circuit Breakers with microEntelliGuard
Trip Units to the Distribution Cable System. The
electronic signals supported by the Advanced
Distribution Cable Junction Box appear below.
®
Input/output signals to Spectra
microEntelliGuard
• control power (+24vdc)
• control power (common)
• voltage A f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
• voltage B f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
• voltage C f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
TM
Trip Unit
RMS Breaker with
®
RMS
• neutral current sensor - black (for equipment ground
fault)
• neutral current sensor - white (for equipment ground
TM
fault)
• breaker position (via installed aux. switch - red wire)
• breaker position (via installed aux. switch - white wire)
• system communications (Comm +)
• system communications (Comm –)
• zone select interlock (ZSI O –)
• zone select interlock (ZSI O +)
• zone select interlock (ZSI I –)
• zone select interlock (ZSI I +)
• reduced energy let-through (RELT I –)
• reduced energy let-through (RELT I +)
• ground fault alarm (GFA/PC1 O –)
• ground fault alarm (GFA/PC1 O +)
• reduced energy let-through (RELT/PC2 O –)
• reduced energy let-through (RELT/PC2 O +)
1
1
1
Neutral current sensor input is required for 3Ø /4W or 1Ø /3W systems. For 3Ø /3W systems, do not make any connections.
GEH-704 Installation Instructions
Figure 1 shows how the Advanced Distribution Cable Junction Box is used in a typical microEntelliGuardTM system.
Figure 1. Typical microEntelliGuardTM Trip Unit (using 20-pin connector) system.
GEH-704 Installation Instructions
The Advanced Distribution Cable Junction Box has a 20pin plug connector on the front face labeled “BREAKER”.
This connector mates to the 20-pin receptacle
®
connector of the Spectra
Breaker with a microEntelliGuard
RMS Molded-Case Circuit
TM
Trip Unit. Figure 2
shows this “BREAKER” input connector pinout for the
Advanced Distribution Cable Junction Box.
The Advanced Distribution Cable Junction Box also
has two 12-pin plug connectors on the front face
labeled “HARNESS”. These connectors mate with the
12-pin receptacle connectors of a Distribution Cable
Harness (cat. nos. SDCHA11, SDCHA30 or SDCHA60). By
connecting to these plugs, the Advanced Distribution
Cable Junction Box provides a connection into or
out of the Distribution Cable System. Figure 3 shows
the “HARNESS” connector pinout for the Advanced
Distribution Cable Junction Box.
Figure 3. HARNESS pinout connections for the Advanced
Distribution Cable Junction Box.
The system is used to carry a variety of electronic signals
®
between Spectra
with microEntelliGuard
RMS Molded-Case Circuit Breakers
TM
Trip Units and Distribution
Cable accessories. The electronic signals supported by
the Distribution Cable System are as follows.
Figure 2. BREAKER input pinout connections for the Advanced
Distribution Cable Junction Box.
Spectra
®
RMS Breaker with microEntelliGuardTM
Trip Unit
• control power (+24vdc;)
• control power (common)
• voltage A f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
• voltage B f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
• voltage C f (must be from Voltage Module or Voltage
Conditioner Plate or Voltage Conditioner Assembly)
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