AUMSHIVAY ENGINEERING PRIVATE LIMITED
B-21, Bhan Nagar, Queens Road, Jaipur-302021
Website: www.aumshivay.com, www.omengineering.in
E-mail:[email protected]
PAGE. 5
REG. OFFICE:VILLA NO. 60,LATA NAGAR, KALWAR ROAD, JHOTWARA, JAIPUR - 302012
TM
TM
Generator Protection Relay (Md-32);
Three-phase percentage biased differential protection relay for
generators and rotating machines, with stator earth fault or restricted earth fault element. Measurement of the System-
frequency differential current with DC offset and harmonic components rejection.
TECHNICAL SPECIFICATIONS
Real Time Measurements
IdA - IdB - IdC - Ido - I1A - I1B - I1C - I2A - I2B - I2C
Maximum Demand and Inrush Recording
IdA - IdB - IdC - Ido - I1A - I1B - I1C - I2A - I2B - I2C
Programmable Input Quantities
Fn = System frequency (50 - 60)Hz.
In = Rated primary current of phase CTs (1 - 9999)A, step 1A
Differential Protection
Current setting range:
Id = (0.02 - 0.2)In, step 0.01
Instantaneous output:
30ms
2 Harmonic restraint level :
2H = (0.1 - 1.0)Id, step 0.01Id
First percent bias (0,5<IR /In<P):
1R = (2 - 20)%, step 1%,
Second percent bias (IR/In>P):
2R = (5 - 50)%, step 1%
Point of slope variation:
P = (1 - 3), step 0.1
Over current Protection
Current setting range:
I> = (0.5 - 10)In, step 0.01In
Instantaneous output:
£ 30ms,
Definite time trip delay;
tI> = (0.05 - 99)s, step 0.01s
Stator Earth Fault
Current setting range;
Io = (0.01 - 1)Ion, step 0.01Ion
Instantaneous output:
£ 30ms
Trip time delayed element:
tIo = (0.02 - 9.99)s, step 0.01s
Breaker Failure Element
Trip time delay:
tBF = (0.05 - 1.00)s, step 0.01s
Features:
Harmonic Restraint.
Phase Over-current protection and Phase Differential protection.
Dual slope programmable percentage bias curve.
Earth Fault or Restricted Earth Fault protection and Breaker Failure protection.
Modbus Communication Protocol.
GENERATOR PROTECTION RELAY (MD-32G)
Item
GENERATOR PROTECTION RELAY
Make
L&T
Model
MD32-G
Description
MD32-G is three-phase percentage biased
differential protection relay for generators
and rotating machines, with stator earth fault
or restricted earth fault element.
