Appendix B -Settings and Signals
MENU TEXT COL ROW DEFAULT SETTING AVAILABLE OPTIONS
DESCRIPTION
IREF> Is 3A 65 0.2
From 0.05*I3 to 1.0*I3 in steps of 0.01*I3
[Courier Number (current)]
Pick-up setting for the High Impedance restricted earth fault element.
VN Input 3B 01 Derived
Derived
Data cell indicating the VN Input is always derived from the 3 phase voltages
VN>1 Function 3B 02 DT
DT
IDMT
Setting for the tripping characteristic of the first stage residual overvoltage element.
VN>1 Voltage Set 3B 03 5
From 1*V1 to 50*V1 in steps of 1*V1
[Courier Number (voltage)]
Pick-up setting for the first stage residual overvoltage characteristic.
VN>1 Time Delay 3B 04 5
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Operating time delay setting for the first stage definite time residual overvoltage element.
VN>1 TMS 3B 05 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.
The characteristic is defined as follows:
t = K / ( M – 1)
Where:
K = Time multiplier setting
t = Operating time in seconds
M = Derived residual voltage/relay setting voltage (VN> Voltage Set)
VN>1 tReset 3B 06 0
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Setting to determine the reset/release definite time for the first stage characteristic
VN>2 Status 3B 07 Disabled
Enabled
Setting to enable or disable the second stage definite time residual overvoltage element.
VN>2 Voltage Set 3B 08 10
From 1*V1 to 50*V1 in steps of 1*V1
[Courier Number (voltage)]
Pick-up setting for the second stage residual overvoltage element.
VN>2 Time Delay 3B 09 10
From 0 to 100 in steps of 0.01
[Courier Number (time-seconds)]
Operating time delay for the second stage residual overvoltage element.
GROUP 1: THERMAL
OVERLOAD
3C 00
This column contains settings for Thermal Overload
Characteristic 3C 01 Single
Single
Dual
Setting for the operating characteristic of the thermal overload element.
Thermal Trip 3C 02 1
From 0.08*I1 to 4.0*I1 in steps of 0.01*I1
[Courier Number (current)]
Sets the maximum full load current allowed and the pick-up threshold of the thermal characteristic.
Thermal Alarm 3C 03 70
From 50 to 100 in steps of 1
[Courier Number (percentage)]
Setting for the thermal state threshold corresponding to a percentage of the trip threshold at which an alarm will be generated.
Time Constant 1 3C 04 10
From 1 to 200 in steps of 1
[Courier Number (time-minutes)]
Setting for the thermal time constant for a single time constant characteristic or the first time constant for the dual time constant
characteristic.
From 1 to 200 in steps of 1