Notice, Potential transformer connection, Output relays – GE Industrial Solutions EntelliGuard TU Trip Units User Manual
Page 29: The contacts are rated for 30 vdc/25 vac max, 1 a, Group 3 – protective relay. latches if trip, Group 4 – current alarm 1, Group 5 – current alarm 2, Group 6 – health status, Fan/command close control
DEH-4567B
EntelliGuard TU Trip Units: UL/ANSI Models
Protection
©2012 General Electric All Rights Reserved
19
Figure 2-7: Voltage Conditioner Plate Wiring — Delta
NOTICE
An incorrect PT voltage set point will result in incorrect
voltage and power metering values.
Potential Transformer Connection
Select the appropriate potential transformer connection,
either line-to-line (Ph-Ph) or line-to-neutral (Ph-N). See “PT
Connection,” below, for more details.
OUTPUT RELAYS
The number of outputs available varies by breaker. These
are relay contact outputs to the secondary disconnect.
Each output can be configured per Table 2-15.
The contacts are rated for 30 VDC/25 VAC max, 1 A.
Power Break I, Power Break II, WavePro, AK, AKR and
Conversion Kit Trip Units have one output relay.
EntelliGuard G Trip Units have two output relays. The relay
output can be assigned to the following functions:
• Group 1 – GF Sum and GF CT alarm only. Does not latch.
• Group 2 – Overcurrent (LT, ST, IOC, GF, CT GF). Latches
• Group 3 – Protective Relay. Latches if trip.
• Group 4 – Current alarm 1
• Group 5 – Current Alarm 2
• Group 6 – Health Status
• Group 7 – RELT (Dedicated to Output 1 when optioned)
• Group 8 – GF sum and GF CT Alarm and TRIP functions.
• Group 9 – REF (restricted earth fault) trip ( IEC
applications only)
• Group 10 – SEF (standby earth fault) trip (IEC
applications only)
• Group 11 – UEF (unrestricted earth fault) trip (IEC
applications only)
The trip units must have the specific option (as an example
protective relay must be enabled in order for protective
function to actuate the relay) enabled in order to actuate
the relay.
Fan/Command Close Control
EntelliGuard trip units include an output dedicated to
controlling either an external breaker cooling fan (5000A
WavePro and AKR breakers only) or a remote close
accessory (EntelliGuard G breakers only). Breaker
documentation provides wiring information.
For WavePro and AKR breakers, the trip unit automatically
calculates cooling requirements and activates the fan
control output to maintain the breaker’s operating
temperature.
For EntelliGuard G breakers, the remote close command is
available via Modbus command. Issuing command 111 will