Specifications
1. 20 years manufacturing experience
2. competitive price,high quality
3. Delivery Detail:within 10 days after receiving deposit
With current transformer and relay device coordination, mainly occurred in line short circuit overload failure, such as to provide signal to relay device to cut off the fault circuit, to protect the security of the power supply system. Protection with micro current transformer entirely different working conditions and the measurement of transformer, transformer protection is just in several times more than normal current current when to begin to work effectively. Protection of transformer main requirements: 1, insulation and reliable, and 2, enough accuracy limit factor, 3, enough thermal stability and dynamic stability. Protection of transformer single phase induction motor under the rated load can satisfy the requirement of accurate level maximum rated primary current is accurate limit current at a time. Accurate limit coefficient is accurate limit a current rating and electric motor price the rated current ratio at a time.
gost motor 7.5kw
Specifications
1. effiency: IE2 and IE1
2. 20 years manufacturing experience
3. 12 months guarantee
4. low noise and vibtration
When an electric current is big enough iron core is saturated don't reflect the role of primary current, accuracy limit factor is said this feature. Protection of transformer accurate level 5, 10 p, p said when accurate limit a current rating the margin of error of 5%, 10% circuit failure occurs to produce heat and electromagnetic force, the impact of the current protection with current transformers have to bear. Secondary winding short circuit, current transformer in one second can withstand without damage of a current RMS, said rated short-time thermal current. Secondary winding short circuit, Single phase motor current transformer to withstand without damage in a peak current, according to dynamic stable current rating. Protective current transformer can be divided into: 1, the current transformer overload protection, 2, current transformer differential protection, 3, earthing protection current transformer (zero sequence current transformer)
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