Protection_Relay

Description

Technical Specifications
Protection Relays
Display
Display Liquid Crystal Display
Digits 3
Input Specifications
Functions
Measurements Under voltage, Over voltage, Under
frequency, Over frequency, Phase asymmetry,
Phase failure and Phase sequence
Time Setting Power ON delay, Trip time delay and
Recovery time delay
Alarm Indications Trip
Latching Selectable
Reset Auto / Manual
Electrical Connection 3Ø – 3 wire, 3Ø – 4 wire
Auxiliary Supply
Supply Voltage Self powered
Operating Range 280 – 520V AC (L – L)
160 – 300V AC (L – N)
VA Rating 30VA max.
Frequency 45 – 65 Hz
Measuring Range
(RMS Value) 0 – 520V AC (L – L)*
0 – 300V AC (L – N)*
Trip Settings
Under Voltage 280 to 520V AC (L – L) [for 3Ø – 3 wire]
160 to 300V AC (L – N) [for 3Ø – 4 wire]
Over Voltage 280 to 520V AC (L – L) [for 3Ø – 3 wire]
160 to 300V AC (L – N) [for 3Ø – 4 wire]
Under Frequency 45 – 65 Hz
Over Frequency 45 – 65 Hz
Phase Failure Yes
Phase Sequence Yes