Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
V<1 3Ph V<2AnyPh
Setting that determines whether any phase or all three phases has to satisfy the undervoltage criteria before a decision is made.
Note: If any stage is disabled, the associated text in the setting menu cell setting will remain visible but will not affect the operation of the
V<1 Function 42 04 DT
DT
IDMT
Tripping characteristic for the first stage undervoltage function.
The IDMT characteristic available on the first stage is defined by the following formula:
t = K / (1 - M)
Where:
K = Time multiplier setting
t = Operating time in seconds
M = Measured voltage/relay setting voltage (V< Voltage Set)
V<1 Voltage Set 42 05 80
From 10*V1 to 120*V1 in steps of 1*V1
[Courier Number (voltage)]
Sets the pick-up setting for first stage undervoltage element.
V<1 Time Delay 42 06 10
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting for the operating time-delay for the first stage definite time undervoltage element.
V<1 TMS 42 07 1
From 0.5 to 100 in steps of 0.5
[Courier Number (decimal)]
Setting for the time multiplier setting to adjust the operating time of the IDMT characteristic.
V<1 Poledead Inh 42 08 Enabled
Enabled
If the cell is enabled, the relevant stage will become inhibited by the pole dead logic. This logic produces an output when it detects either an
open circuit breaker via auxiliary contacts feeding the relay opto inputs or it detects a combination of both undercurrent and undervoltage
on any one phase. It allows the undervoltage protection to reset when the circuit breaker opens to cater for line or bus side VT applications.
V<2 Status 42 09 Disabled
Enabled
Setting to enable or disable the second stage undervoltage element.
V<2 Voltage Set 42 0A 60
From 10*V1 to 120*V1 in steps of 1*V1
[Courier Number (voltage)]
This setting determines the pick-up setting for second stage undervoltage element.
V<2 Time Delay 42 0B 5
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting for the operating time-delay for the second stage definite time undervoltage element.
V<2 Poledead Inh 42 0C Enabled
Enabled
Similar function to V<1 Poledead Inhibit.
V> Measur't Mode 42 0E V>1 & V>2 Ph-Ph
V>1 & V>2 Ph-N
V>1Ph-Ph V>2Ph-N
V>1Ph-N V>2Ph-Ph
Sets the combination of measured input voltage that will be used for the overvoltage elements.
Note: If any stage is disabled, the associated text in the setting menu cell setting will remain visible but will not affect the operation of the
V> Operate Mode 42 0F V>1 & V>2 Any Ph
V>1 & V>2 3 Phase
V>1AnyPh V>2 3Ph
V>1 3Ph V>2AnyPh
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