59Nh And 59Nl Elements - GE F650 User Manual

6.15 OVERVOLTAGE ELEMENTS (59P, 59X, 59NH, 59NL, 47)
Set the relay as follows
Apply voltage as indicated on the table under the overvoltage setting level and verify that the relay does not trip.
Verify that the relay trips for the set voltage (with an admissible error of 5%).
ELEMENTS
59NH/59NL
This element can also be tested by applying only phase voltages. For this purpose, it is necessary to set Auxiliary Voltage =
VX. In this condition, Vn voltage is calculated as a sum of the phase voltages.
6
6-22
GENERAL SETTINGS
Auxiliary Voltage
NEUTRAL OV HIGH/LOW (59NH/59NL)
Function
Pickup Level
Trip Delay
Reset Delay
INPUT PICKUP LEVEL TRIP DELAY
(VOLTS) (SECONDS)
VX 120 2
F650 Digital Bay Controller

6.15.3 59NH AND 59NL ELEMENTS

VN
ENABLED
120 V
2.00
0.00
APPLIED TRIPPING TIME (S)
VOLTAGE (V)
EXPECTED
114 NO TRIP
132 2
132 2
6 COMMISSIONING
ADMISSIBLE
NA
[1.9–2.1 ]
[1.9 – 2.1]
GEK-113000AE