VAMP Ltd
Generator protection relay
Technical description
VAMP 210
VM210.EN004
Vamp 24h support phone: +358 (0)20 753 3264
27
The P coordinate of the setting point Q1 has a fixed value equal
to zero and the Q coordinate is adjustable.
The P coordinate of the setting point Q2 has a fixed value of
80% of the rated power of the generator as set by the operator
and the Q coordinate is adjustable.
Parameters of the underexcitation protection:
Q< (40N)
Parameter: Value/unit:
P
%
Active power as compared to Sgn
kW
Primary value of active power
Q %
Reactive power as compared to
Sgn
Measured
value
kVar
Primary value of reactive power
Q@P0% %
Reactive power set value Q1 as
compared to Sgn, when P = 0%
kW
Reactive power set value as
primary value, when P = 0%
%
Reactive power set value Q2 as
compared to Sgn, when P = 0%
Q@P80%
kVar
Reactive power set value as
primary value, when P = 0%
t< s
Operating
time
Setting
values
Release s
Release
delay
SCntr
Cumulative start counter
TCntr
Cumulative trip counter
Flt pu
Min. reactive power value in fault
situation as compared to Sgn
Recorded
values
EDly %
Elapsed time as compared to the
set operating time, 100% =
tripping
2.2.11.
Reverse power protection (32R)
The reverse power protection measures the three-phase power
of the generator and it protects the prime mover of the
generator, should the generator start motoring attempting to
feed power to the prime mover. Some prime movers are liable
to damage in these situations and therefore the reverse power
protection system must be sensitive enough and adjustable, to
be able to detect even low reverse power situations.
The reverse power protection is provided with two adjustable
reverse power stages with separately adjustable limit values
and operating times.
