GE DBT, Instruction Manual

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RELAY SETTINGS
GEK-105597C DBT Digital Trip Coil Supervision Relay 15
6. RELAY SETTINGS
The settings are located on the relay’s nameplate in the form of dip switches. Their meanings are printed, indicating
ranges in addition to the functions.
In the DBT3000 there is an internal setting. This setting
enables individual or general selection of the output
relays. If
General mode is chosen (position G ), any fault
(in the coil or the control voltage) will trigger all the
relays. If the jumper is put in the
Independent mode
(position I ) each relay will operate only on its own
function when the corresponding fault occurs.
LEDs are also located on the relay and serve as indicators to give information on the relay and the circuits being
monitored.
The next section describes the LEDs and their settings, seen from left to right. If a relay is not available, use
Figure 1:
Characteristics nameplate for reference.
6.1 ‘READY’ LED
A two-colour LED which can be in any one of the following three situations:
-
Off : indicates absence of auxiliary supply voltage.
-
Green : the relay is fully operational.
-
Red: The relay is disabled, either because one of the disabling inputs has been enabled or because it has
been disabled with the ENABLE switch.
When the DBT is disabled all its outputs are disabled and the SYSTEM READY relay is closed. However, all
the measuring, decision and timer units stay operational, as do the LED indicators.