GE GEK-45404F User Manual
Page 3
GEK-45404
3
DESCRIPTION
These are single-phase, sensitive overvoltage relays of the induction disk construction. They are
equipped with a time dial so as to provide adjustable time delay in their operation. The relays are
principally applicable for sensitive overvoltage ground detection for high-impedance grounded
generators or for ungrounded power systems. The differences among the four relays are as indicated
in Table A below. Each relay is mounted in a standard size S1 drawout case and the outline and
panel drillings are shown in Figs. 14 and 15; Fig. 13 shows the outline for an external capacitor when
used. The internal connections of the relays are indicated in the table. Each relay contains a target
seal-in unit that is used to protect the relay main contacts and control spring from damage due to
breaker-trip current.
TABLE A
CONTINUOUS
RATING**
(VOLTS)
PICKUP
RANGE,
VOLTS
TAPS
CONTACTS
INTERNAL
CONNECTIONS
FIGURE
IAV51D
115
10-40
199
16-64
YES
1NO
1
345
28-112
IAV51K
67
5.4-20
YES
1NO
2
IAV52C
115
9.2
199
16
NO
2NO*
3
345
28
IAV52D
199
16-64
YES
2NO*
4
IAV52K
67
5.4-20
YES
2NO*
5
*
The two normally-open contacts have a common connection; refer to the internal connections of
the relay.
** All relays have a 360 volt 10 second rating.