TYPE I R Q RELAY
*
EN ERGY R EQU I REM ENTS FOR THE
SEQUENCE FI LTER A N D TH E DI RECTIONAL U N I T
( A l l Burdens
a t 6 0
Cyc les)
The current burden of the relay with positive sequence currents applied (no output current to the direc-
tional unit) is as follows:
Phase
Continuous
One Second
Watts
Volt-Amps.
Rating-Amps.
Rating-Amps.
at
5
Amps.
at
5
Amps.
Power Factor Angle
2
10
150
5 . 5
5 .5
oo
3
10
1 50
.35
1 . 28
74°
Lag
1
10
150
5 . 4
7.5
44°
Lag
The current burden of the relay with zero sequence currents applied is as follows:
Wa
t
ts
V o l t -
A m p s.
P h a s e
A t
5 A m p s .
At
5 A m p s .
P ower F a c tor
1
4 . 66
5 . 5
3 2°
2
4.92
5.0
100
3
3 .30
3 . 7
27°
The voltage burden of the relay with positive sequence voltage applied (n o output voltage to the direc
tional unit) is as follows:
Pot. Transf. Across Phase
Volts
Watts
volt-Amps.
Power Factor Angle
Burden values on three star connected potential transformers. Values
at
the star voltage of
66.4
volts
(
1 15
volts delta).
1 8
1
2
3
1 15
1 15
1 15
0
0. 2
23 . 2
26. 8
0.3
27.0
Burden values on two open-delta potential transformers. values at
1 15
volts.
1 2
1 15
-23. 2
46.5
23
1 15
46.6
46.6
23
1 15
. 10
.48
3 1
1 15
23 . 2
46.5
3 1
1 15
23 . 2
46.6
12
1 15
0.50
0.52
Burden values on three d elta connected potential transform ers . Values at
1 15
volts.
3 1
1 15
15 .4
3 1.0
1 2
1 15
-7.8
15 . 6
23
1 15
15 . 6
1 5 . 6
90°
Lag
48°
Lag
30°
Lag
1 20°
Lag
00
5 8°
Lag
60°
Lag
60°
Lag
2°
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