39
1VAL050601-MB Rev C
APPENDIX C
ELECTRONIC CONTROL BOARD
FEATURES
Temperature Protection
The Temperature Protection circuit monitors the average temperature of a critical area on the ED2.0 power
supply. The output power will be linearly reduced to zero as the temperature increases from 172 to 203 de-
grees F (78 to 98 degrees C).
Wrong Position Auto Trip
An Auto Trip command will be issued in the event the breaker does not perform a successful close operation
within 95 milliseconds after the close command is issued.
Energy Failure Auto Trip
The Energy Failure Auto Trip function is selected by Dip Switch I1004-1 (Appendix C) and will cause the
breaker to auto trip in the event the capacitor voltage falls below 49 volts. Necessary precautions must be tak-
en when power is removed (i.e., power removed for maintenance) as the breaker will automatically trip if
I1004-1 is in the “On” position.
Reduced Power Consumption
The Reduced Power Consumption setting will lower the power output of the power supply recharge unit, on
the ED2.0 board, from 75 W power to 33 W. This enables the ED2.0 board to be supplied with the energy de-
livered by a voltage transformer if necessary. The Power Supply Recharge Unit is 80% efficient. This means
that the Auxiliary Power supply input must be at least 93.75 W for the 75 W setting or 41.3 W for the 33 W
setting. The 33 W option is hardware selectable with Jumper JP1019.
RS-232 Port / JTAG Communication Port
Used by ABB factory only.
Provided by Northeast Power Systems, Inc. (NEPSI)
To Next Page
Loading...
