Ratings; Contacts - GE CLPG12C Instructions Manual

GEI-83910
The sensitivity of each of the overcurrent units, as well as that of the
directional unit, is adjustable over the ranges specified under RATINGS. The
operating times of the three units are given in the CHARACTERISTICS section. !\
complete elementary diagram for a directional-comparison scheme over a carrier
channel including the CLPG12C may be obtained from the local district office.
Figure 2 shows typical external connections.
RATINGS
The potential coils of the CLPG12C relay are rated 120 volts intermittent and
360 volts for 10 seconds, both values being at rated frequency.
The CLPG12C relay is available in either of the following ratings at either 50
or 60 Hz.
Gl Unit
G2 Unit GD Unit GD Unit
Range Range Range Range
in in
V
x I
I
x I
Amperes Amperes Potential Current
Polarization Polarization
0.4 - 1.6 0.5 - 2/1 - 4 3.6 - 57.6 0.25 - 4.0
0.8 - 3.2 1 - 4/2 - 8 3.6 - 57.6
0.25 - 4.0
The angle of maximum torque is 80" ± 2" (I lags V) when the unit is potential-
polarized. If it is current-polarized, the angle of maximum torque is 10"
±
10" (I
pol lead lop).
If the unit is set for 0.25 (IxI), then the unit will pick up when VxI
=
4.5 ±
15%. If a 3.6 VA pickup is required, then the control spring should be adjusted so
that the contact will just close when 3.6 VA is applied at the angle of maximum
torque.
The auxiliary-telephone-relay unit (GDIX) is available in continuous ratings
of 48 or 110 or 125 or 250 vo lts DC. The current ci rcu its are rated 3 amperes
I,
cont i nuous and 140 amperes for one second. The 140 ampere rat i ng is also the
max imum permi ss i b 1 e current. The target-and-sea 1- i n coil s with a one (1) ampere
rating will carry 30 amperes for tripping duty and 2.5 amperes continuously. The
target··and-seal-in units with ratings of 0.6 ampere DC wi 11 carry 30 amperes for
tripping duty and 0.9 amperes continuously.
CONTACTS
The tripping contacts of this relay are the normally-open contacts of the G2
and GD units. They wi 11 carry 2.5 amperes cont i nuous ly and wi 11 c 1 Dse and carry 30
amperes DC for tripping duty at control voltages of 250 VDC or less. The breaker-
trip-coil circuit should, however, always be opened by a circuit-breaker auxi liary
switch or' other suitable means. If the tripping cUlTent exceeds 30 amperes,
,in
auxi liary tripping y'eliJy should be used.
,