TAS APFC-06 04 User Manual page 24

Power Factor Controller APFC 06
Fault
Over voltage flt
Off Step : 2
Over voltage
Limit ( % ) :115
Over voltage
Resume ( % ) :110
Under voltage flt
Off Step : 2
Under voltage
Limit ( % ) :074
Under voltage
Resume ( % ) Resume ( % ) :078 :078
Over load flt
Disable : 0
Over load
Limit ( % ) :130
Over load
Resume ( % ) :125
Under load KW Flt
Off Step : 2
Under load
Limit ( % ) :020
Under load
Resume ( % ) :025
For most of the types of faults defined here, the options
available are as hereunder:
0=Disable
1=Indicate (Display a Fault Message & or store in Flash)
2=Off Step (Switch off Non Fixed Steps one by one)
3=Off Fixed Step Also (Switch off All Steps one by one)
4=Fast Off Step (Switch off all Steps in one shot)
For all the faults, normally two limits are defined. One is
Detection Limit and another Resume Limit. Detection
Limit if exceeded by the parameter would mean the action
as defined by parameter in type of fault (as given here-
above). Resume Limit defines the parameter value below
which the fault is deactivated.
• Over Voltage: As name suggests, its for Over-Voltage
conditions.
• Under Voltage: For Under-Voltage conditions.
• Over Load: If APFC06 detects the supply system is
overloaded (Amps%), then it is sometimes recommended
to keep the capacitors in the circuit so as to maintain
reduced Load current due to switched ON capacitor
banks . Under such circumstances this parameter is set
to Indicative.
• Under Load fault: The values here are set as % of
Maximum rated kW. This is useful in case of banks are put
in circuit to take care of no load compensation. Value for
this Under-Load kW can be calculated as shown as per
the following.
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