Use of the environment
The altitude is not more than 5000m;
The relative humidity of air is not greater than 95%, and there is no conductive dust.
The ambient temperature is -70 C ~70 C;
The earthquake intensity is not more than 8 degrees.
There are no fire, explosives, chemical corrosions and severe vibration places.
Technical parameter
1. the product is applied to 3kv\6kv\10kv\20kv\35kv\66kv voltage transformer neutral point through resistance grounding.
2. resistance material can be made of iron and titanium, nickel chromium alloy, stainless steel or imported stainless steel. High conductivity, high temperature resistance, maximum use temperature of 1500 degrees centigrade, low temperature coefficient, stable resistance, corrosion resistance, anti flameproof and explosion-proof, high reliability.
3. resistor technical parameters
The flow of 5-2000A is allowed.
Allow flow time: 10s, 30s, 60s, 5min, 10min, 30min, 2H, long term operation.
Allowable temperature rise: the flow time is 10s, 30s and 60s at 760 ℃; the flow time is 10min at 610 ℃; and the long run time is 385 ℃.
Tolerance to high temperature: melting point can reach 1500 degrees centigrade and maximum usage temperature is 1100 ℃.
High resistivity: resistivity (1.04 ~ 1.06) μΩ·m
Resistance stability: resistance temperature coefficient 2.17 x 10-4 Omega C: (resistance temperature coefficient to 315 ℃ 0.000225/ C, 426 C to 0.000249/ C, to 537 C 0.000283/ C, to 648 C *0.000313/), to ensure the sensitivity of protection.
Reasonable heat dissipation structure, resistor adopts grid structure, has the best cooling air passage, avoids local high temperature point and easy burning point.
Modularization of resistance components. It can be combined by series and parallel to meet the needs of different current, voltage and resistance.
4. the material of the resistance cabinet is made of aluminum zinc plate, stainless steel or cold rolled steel sheet, with beautiful appearance, strong corrosion resistance, and the protection level can reach IP65.
5. according to different use conditions, the resistance cabinet is divided into indoor type and outdoor type. The way of inlet and outlet can be up, down, down and down, etc. the upper and lower ends of the cabinet are equipped with wall bushing at the top of the cabinet.
6.WF-BZD neutral grounding resistance cabinet is a standard product, which can be operated in parallel with resistance or reactance. It is convenient to gradually reduce the grounding resistance for the gradual expansion of the power grid.
7. intelligent monitoring assembly
Schematic diagram
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Mob: +86 0 138-3227-7552 (Jack) |
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Mail: weifan-Jack@mfrdo.com |
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WhatsApp: +86 138-3227-7552(Jack) |
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Q1. Are you the manufacturer or trader?
A:WEIFAN is a leading & professional manufacturer located in hebei province of China.
Q2. What is your main markets?
A:Our main market is in home & a half in South-East Asia, Middle East,West-Africa, East-European countries & Some South America..etc
Q3. What is your delivery & after-sales serive?
A:The delivery is according to order qty, normally for containers order we need 1 month. Per each month 20 containers (20’ft or 40’ft)are no problem for us .
We can answer user’s question and solve their problem in 24 hrs per each day and give full technical support in time to all of our products.
Q4. What is your product warranty?
A:Firstly we have quality certificates like CCC, ISO9001..etc .We supply 18 months quality guarantee,during this period we supply free repair,maintenance and technical support.
Q5.Do you accept OEM and ODM?
A:Yes. Our R & D team owns latest technology ,can develop & produce products as customers’ drawing & under their brand
Q6. What is your payment terms?
- 30% T/T in advance as deposit ,balanced against the shipping documents
- irrevocable L/C at sight for order which amount is over 100 thousand USD
- for old business partner,we can negociate together for other special terms
- For samples, we accept T/T,Western union, moneygram, paypal..etc
Q7. What is your terms of packing?
A: Generally, our packing is wooden case or customized packaging according to customer needs.
