ABB OMD800 - Page 33

33
AUTOMATIC CONTROL UNIT, OMD800
AUTOMATIC CONTROL UNIT, OMD800
External Voltage Transformer
User can choose whether the voltage transformers are used in measured lines or not. When the external
voltage transformers are present user must set also parameters Ext VT Primary Voltage and Ext VT
Secondary Voltage according to transformer ratio. Absent is the default.
Figure 7.14 Ext Voltage Transformer, Absent is the default
External Voltage Transformer Primary Voltage
If external voltage transformer is present user has to set primary voltage of the external voltage trans-
former. Primary voltage is set according to rated operational voltage of the system. Factory setting is
690/400 V.
Figure 7.15 Ext VT Primary Voltage, factory setting is 690/400V
External Voltage Transformer Secondary Voltage
If external voltage transformer is present user has to set secondary voltage of the external voltage
transformer. Secondary voltage is set according to transformer ratio. Factory setting is 400/230 V.
Figure 7.16 Ext VT Secondary Voltage, factory setting is 400/230V
System Configuration
Number of Phases LN1
Number of Phases LN2
Ext Voltage Transformer
5/13
A07122
Ext Voltage Transformer
Absent
A07123
Cancel EditOK
System Configuration
Number of Phases LN2
Ext Voltage Transformer
Ext VT Primary Voltage
6/13
A07124
Ext VT Primary Voltage
690/400 V
A07125
Cancel EditOK
System Configuration
Ext Voltage Transformer
Ext VT Primary Voltage
Ext VT Secondary Voltage
7/13
A07126
Ext VT Secondary Voltage
400/230 V
A07127
Cancel EditOK
Secondary Load
User can choose whether secondary load is Not Used, Opening Only or Opening And Closing, Opening
pulse or Opening/Closing Pulse. Not Used is the default. Secondary load open and close commands are
controlled with output relay X24. Open command is sent during switching sequence and close com-
mand is sent during back switching sequence.