For the partial discharge test of high-voltage/ultra-high-voltage cables above 500kV, the terminal used must be no partial discharge under the test voltage (whether inside the insulator or along the surface), deionized water terminal system is one of the most widely used at-home and abroad
At the heart of a wide range of installations, the water terminal is the YZPD-CP-Ⅲ pure water device and the water terminal.
The biggest highlight of the design of YZPD-CP-Ⅲ cooling pure water equipment is that it can supply water in two ways during the partial discharge test. One is to supply high-purity water by ion exchange, and the other is to supply stable pure water in the water tank. It can also be used in two ways. When supplying water, the water quality can be adjusted manually or automatically according to the requirements. After the impact test, generally, poor water will remain in the pipeline, which will affect the partial discharge test.
The ion exchange rate will increase the operating cost of replacing the resin, so the stable pure water in the sink is used for pipeline flushing. In recycled water, dual-channel water collection at the inlet and outlet is automatically stopped due to water shortage, making the water collection time shorter and cleaner.
The whole body adopts sanitary grade stainless steel pipes, and there is no leakage.
The water tank uses an all-plastic 1000L imported ABS water tank.
YZPD-CP-Ⅲ cooling pure water equipment is designed with a maximum flow rate of 40L/M per outlet and the flow rate can be adjusted. Product water temperature: When using cooling water ≤10℃, the outlet water temperature is ≤40℃. in the sink
Under the condition of adding conductivity ≤8us/cm, the equipment uses ultrapure water outlet water resistivity ≥ 10MΩ.CM, and the pure water outlet water resistivity after the use cycle is 5MΩ.CM to 10MΩ.
.CM.
System composition
1. Pure water delivery pump: SZB090 power 0.90 kW voltage 220V frequency 50HZ/60HZ
2 units
2. Precision filter: 20" shell, blue cover, 1" inlet and outlet, 20"*0.45μm
Filter element*2 pieces
3. Solenoid valve: Normally closed type 2W-25 interface 1"
4. Solenoid valve: Normally closed DF-25 interface 1"
5. Solenoid valve: Normally open type 2W-25 interface 1"
6. Timer: DHC3L-3A
7. Resistance monitor: DZG-303A
8. Schneider DC contactor: RXM-2LB-2BO
9.LG AC contactor: LS-9A
10. Control unit box
11. Fuse RT18-32X
12. Thermostat: Temperature control switch HH48M
13. Pressure switch HLP520; liquid level LS-YZ-7
14. Ion exchange mixed bed: 12" (Ф)*31" (H) 2 pieces
15. French Rohm and Haas fine mixed bed special resin UP-6105 100L
16. Water storage barrel: PT-1000L
17. Heat exchanger: plate heat exchanger EATB55-90 stainless steel 316