Pressure Relief Valve for Advanced Industrial Transformers

Product Description

Overview
Quick Details
Place of Origin: China Brand Name: XINCHENG
Product name: Pressure Relief Valve Application: Electric Power Transmission
Type: Safety Relief Valves, Pressure Reducing Control Valves Media: Oil
Usage: Power, oil transformer Phase: Three
Temperature of Media: Normal Temperature Body material: Stainless Steel
Certificate: ISO9001
Product Description:
YSF series relief valve is a pressure relief device developed by our company, which is used to protect the safe operation of the oil tank and can monitor the pressure change inside the oil tank in real time. It is mainly used in oil-immersed power transformers, power capacitors, reactors, etc. On power equipment, it can also be used to release the pressure when the oil tank of the on-load switch is over pressured.
When the oil-immersed transformer fails during operation, due to the overheating of the coil, part of the transformer oil is vaporized, and the pressure in the transformer tank increases rapidly. At this time, the pressure relief valve acts quickly within 2ms to protect the tank from deformation or bursting. When the pressure in the tank rises again to reach the cracking pressure, the pressure relief valve operates again until the pressure in the tank drops to normal. At the same time, it can effectively prevent external air, dust, impurities, water vapor, etc. from entering the running transformer, thereby protecting the transformer from damage.
Diversity:
The opening pressure can be adjusted, and the product can be customized according to the opening pressure required by the user. Can provide dual electrical signal output. Users can freely choose the installation diameter and the installation flange connection method to customize.
Convenience:
It can be equipped with a bleed plug, which can discharge the excess gas in the pressure relief valve cavity after oil filling. A wiring diagram is attached on the inside of the upper cover, which is convenient for the user to operate the wiring.
YSF5, 6, 8 and 9 suffix numbers 5, 6, 8 and 9 are the product design serial number, which has no impact on the product specifications 35 / 25, 35 / 50, 55 / 50, etc. when purchasing products, you only need to recognize the product opening pressure and fuel injection diameter!
Model of pressure relief valve (without point contact): YSF8-35/25JTHB,YSF8- 35/50JTHB,YSF8- 55/50JTHB, etc.
Model of pressure relief valve (with point contact): YSF8-35/25KJTHB,YSF8- 35/50KJTHB,YSF8- 55/50KJTHB, etc.
Model of pressure relief valve (with point contact and directional injection): YSF8-55/80DJTHB,YSF8- 55/130DJTHB,YSF8- 55/50DJTHB, etc.
Effective fuel injection diameter (mm): Φ 25, Φ 50, Φ 55, Φ 80, Φ130
Opening pressure (Kpa): 35, 50, 55
Closing pressure (Kpa): 13, 25, 27

Model	Cutout	Cover opening		Injection caliber	high	Maximum outer diameter	Closing pressure	Cracking pressure	Oil weight in tank
YSF9-25/18THB	B	ф42	M38*2	18	60	ф55	19	25±5	<1.5
YSF9-35/25THB	B	ф55	M48*3	25	90	ф75	19	35±5	<1.5
YSF9-35/50THB	B	ф93	M80*3	50	100	ф105	19	35±5	<1.5
YSF9-35/25KJTHB	B	ф55	M48*3	25	130	ф80	19	35±5	<1.5-4.5
YSF9-35/50KJTHB	B	ф93	M80*3	50	140	ф115	19	35±5	1.5-4.5
YSF8-35/25JTHB	B	ф40	M33*2	25	78	ф68	19	35±5	<1.5
YSF6-35/25JTHB	B	ф40	M36*2	25	125	ф82	19	35±5	<1.5

Character:
1) The product has electrical alarm signal, which can realize remote monitoring;
2) It is suitable for high-voltage transformer, gas transformer or high-voltage disconnector;
3) In case of internal fault of electrical equipment, the valve will open to release the pressure in the oil tank;
4) When the pressure in the oil tank drops to the closing pressure value of the valve, the valve is reliably closed to prevent external moisture and impurities from entering the tank;
Φ80mm, Φ130mm diameter pressure relief valve is mainly suitable for the pressure relief of large oil-immersed power transformers, power capacitors, reactors and other equipment when the oil tank is overpressured.
When the internal pressure of the oil-immersed power transformer tank rises sharply due to an accident, if the pressure is not released in time, the tank will deform or even burst. The pressure relief valve can be opened quickly when the pressure of the fuel tank rises to its opening pressure value, so that the pressure in the fuel tank is quickly reduced. When the pressure drops to the closing pressure value of the pressure relief valve, the pressure relief valve is closed reliably, so that the positive pressure in the fuel tank is always maintained, and the external air, water and other impurities are effectively prevented from entering the fuel tank. The pressure relief valve with directional oil injection device (hereinafter referred to as the directional oil injection pressure relief valve) can spray the released transformer oil directionally, and guide it into the oil collecting pool through the oil guide pipe to prevent oil from splashing and meet the requirements of fire protection and environmental protection.
Φ80mm, Φ130mm diameter pressure relief valve, in addition to the conventional electrical alarm signal, can also add the function of electrical alarm signal for computer, which can realize dual-channel electrical signal output, and lead out independently, users can choose according to their needs when ordering products .
Installation and use of pressure relief valve:
(1) the pressure relief valve is generally installed on the oil tank cover or side wall of the transformer.
(2) for pressure relief valve with flange structure, flange base shall be equipped.
(3) for threaded products, see the installation size for the opening size on the transformer tank cover.
(4) each product is equipped with a safety helmet, but it is only convenient for users to use when conducting the overall sealing test of the transformer. It must be removed before operation.
The product has electrical alarm signal, which can realize remote monitoring.
(1)applicable to liquid or gas insulated transformers, mutual inductors, on load tap changers, high voltage switches and other electrical products.
(2) open the internal pressure relief valve of the oil tank to prevent the oil tank from bursting and deformation.
(3) when the pressure in the oil tank drops to the closing pressure value of the valve, the valve will be closed reliably to prevent external moisture and impurities from entering the tank.
Service conditions and installation mode
(1) ambient temperature: - 30 ºC ~ 40 ºC.
(2) installation position:
a) Installed on the oil tank cover;
b) On the upper side wall of the oil tank;
c) Raise the seat.
Packaging & Delivery
Packaging Details : carton and packaged in plywood pallet, or by customer's demand
Port: Tianjin, Qingdao or Shanghai
Lead Time : 7-15days
Please Contact Us
Miss: lydia

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