Table 3; Burdens; Dc Coils; Ac Coils - GE HGA11A Instructions Manual

DC COILS

Burden data for DC coils is shown in Table 3.
----------- RE�1STAN�t --------------------- Rt�1ST AN � -----
VOLTS
250
125
62.5
48
32
24
12
6

AC COILS

Certain quantities should be defined before giving burden data for AC coils:
Roc is resistance of a coil as measured with an ohmmeter,
bridge, etc.
Ro o is the AC resistance of a coil when AC power is flowing through
the coil, but the relay is not picked up.
X o
is the inductive impedance when the coil is energized, but the
o
relay is not picked up.
impedance of coils under picked-up conditions are designated
as
Rpu
Zo o is the impedance of the relay in dropout condition
is the impedance of the relay in picked-up condition.
Zpu
--corr----RA TrNG
v o LTs
HERTZ
115 . 60
230 60
60
460
575 60
GEH-1793

TABLE 3

DC COIL BURDENS
+10% WATTS
15500 4.03
3650 4.31
930 4.20
512 4.50
250
4.10
160 3.60
41 3.51
9.9 3.60
X pu
and
TABLE 4
AC COIL BURDENS
____ _____
R oo
R oc
______
+10% +10%
90 210
376 860
1640 3770
2200 4090

BURDENS

AMPS +10%
1 3.42
2 0.843
3 0.360
4 0.195
5 0.124
The resistive and inductive parts of
______ _____
x oo z oo
R
p
+10% +10% +10%
510 550 377
2060 2230 1260
9010 9770 4590
11400 12400 7470
Continued
5
- -
----
WATTS
3.42
3.37
3.24
3.12
3.10
u ___ --xru ____
z pu --
+10% +10%
926 1000
3750 3960
16400 1700
22100
20800