Advertisement
Type IAV Undervoltage and Overvo/tage Relays
GEH-12668
100
Function
Tripping Duty
Carry Continuoudy
4
120
140
Per cent of minimum operating voltage
2.
Time-voltage <urves for Types
Fig.
Amperes,
A-c or D-e
I
2-amp Tap
0.2- a rnp Tap
(0.13
Ohm)
(7 Ohms)
Target and
Target and
Seal-in Coil
Seal-in Coil
30
5
4
0.8
160
:ao
200
IAVSIA
IAV52A
and
relays
The tap setting used on the seal-in element is
determined by the current drawn by the trip coil.
The 0.2-ampere tap is for use with trip coils that
operate on currents ranging from 0.2 up to 2.0 am
peres at the minimum control voltage. If this tap is
used with trip coils requiring more than two amperes,
there is a possibility that the seven ohms resistance
will reduce the current to so low a value that the
breaker will not be tripped.
The 2.0-ampere tap should be used with trip
(
"--·
2 20
Advertisement
