The instrument is suitable for connecting 3 wires directly from resistance array unit of on load tap changer [oltc]. Depending upon the position of tap changer the indicator will indicate the tap position.
Specifications:
Display type : 2 digits, 7 segment led display.
Auxiliary supply : 90 - 260 v ac/dc
Suitable signal input : suitable for 3 wire connection from resistance array
Tap position indication range : 1 - 17 [other positions on request]
Resistance per step : 100, 1000 ohms [to be specified]
Degree of protection of enclosure: ip 40.
H.V.Test : signal terminals to body earth, 500v ac 50 hz for 1 minute.
Power terminals to body earth, 2 kv ac 50 hz for 1 minute.
I.R. Test : 20 meg. Ohms when checked by 500 v dc megger.
