71
Before failure: 1# bus with current and voltage on. 2# bus with voltage, 2# main
transformer without current.
In failure state: DL11 tripped, 1 # bus and 2# bus without voltage, 1# main transformer
and 2# main transformer without current.
Standby power supply automatic switch (BZT) operation: When standby power supply
automatic switch judge that there are no current and voltage on 1# bus, standby power supply
will operate, DL131 disconnect, DL231 close.
After standby power supply automatic switch operation: 1# bus with voltage, 1# main
transformer without current, 2# bus with voltage, 2# main transformer with current. State
settings of current and voltage are as follows:
Before failure
In failure state
BZT operated
2
Test connection- please refers to item 4.1.2.
(3) The main wiring 3:
1
Working principle:
Bus
Bus
Summary of Contents for HT-802
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