Ysf4II Pressure Relief Valve for Transformers

Application

The products that coupled with electrical alarm signal realize remote control.

The products are apt for electrical equipments such as gas or liquid insulate transformer, instrument

transformers,on-load-tap channel switch, high voltage switch etc.

Once there’s something wrong in such electrical equipments, valve open and relieve the pressure to avoid oil

basin from metamorphose and blowout. With the pressure reduced the valve automatically closed to prevent

water and impurity got in from outside.

Working conditions and install mode:

Environment temperature – 30º C~40º C

Installation site

A) Install in the oil basin to cover

B) Install in the oil basin to sidepiece upside

C) Install in lift pedestal Alarm and Enviroment Install, Using, Debugging Install: Pressure releasing valve and

tank connect with the stud bolt

Attention:

1) The bottom of pressure releasing valve assemble to seal well;

2) When connect the pressure releasing valve and tank, tighten the bolts equality, avoid that valve pedestal

rupture.

L Using: With latching that must be removed before equipment circulate;Insure the normal work of the pressure

releases valve.

L Debugging: Electric alarm switch, should manual debug deferent signal of switch whether exactitude,

sensitive, before the equipments circulate.

L Method:

1)Measure export signal of switch when pressure releasing valve action less by multimeter to see whether in

accordance with the signal mark of the switch.

Viz.: (a) “Common” towards “Normal open” normal open

       (b) “Common” towards “Normal closed” normal closed.

2)Experiment of simulate releasing valve’s action, checkout whether inching switch accurate export behavioral

signal. Method: Raise the small red hat of the pressure releasing valve, then releasing valve turn on, check

whether the switch measure of the electric signal change.

Viz.:

(a)”Common” of switch towards “Normal open”: “Normal open” should turn to “Normal closed”

(b)”Common” of switch towards “Normal closed”: “Normal closed” should turn to “Normal open”;

(c)Examine the signal switch and control circuit connect whether right and good.

L Attention: The small red hat must be replacement after test over, insure that the pressure releasing valve

normal working and warning.

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