Doc ID : ADR241A_IM_01
Ref ID : ADR241A/IM/TC
Rev No. : 02
Page No. : 147 of 150
ADR141A /
ADR241A
11.5
Pick up and Trip Test
•
Connect current source at R phase CT terminals 1A/5A current input terminal.
•
Set current setting value to 100% i.e. 1A/5A, TMS at Minimum (x0.01) value.
•
Start current injector to & increase current value till relay get pick up and trip. The
operating value should be within 1 to 1.1 times of set pickup value.
•
Select the Curve Normal Inverse 1 and Set the TMS at 1.00.
•
Connect the assigned trip contact to Timer.
•
Set and apply 2 times current value and measure the timing on timer.
•
The measured timing should be ±5% of actual timing (10.029 Sec).
•
Repeat the above procedure for remaining phases and Earth Fault.
Phase Protection Test: -
Setting IP>: ________ IP> TMS =: _______
Threshold
Theoretical Value
Relay Value
IP> Threshold
________A
________A
IP> Drop Threshold
________A
________A
Time Delay Setting = _________
IDMT Characteristics = ________ 10 Times _________Sec. (take value from selected curve)
Threshold
Relay
Time Delay at 2 times of IP> setting
________ms
________ms
Time Delay at 10 times of IP> setting
________ms
________ms
Earth Protection Test: -
Setting IE>: ________ IE> TMS = :_______
Threshold
Theoretical Value
Relay Value
IE> Threshold
________A
________A
IE> Drop Threshold
________A
________A
Time Delay Setting = _________
IDMT Characteristics = __________ 10 Times _________Sec.
Threshold
Relay
Time Delay at 2 times of IE> setting
________ms
________ms
Time Delay at 10 times of IE> setting
________ms
________ms
Summary of Contents for ADR141A
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