MOV on the proper use of distribution transformers

Metal oxide arrester ?during normal operation and distribution transformers in parallel, the terminating line, the lower end of the ground. The pressure generated when the three parts? MOV for Counter When the line overvoltage occurs, this time over-voltage distribution transformer will be subjected by lightning, leads and grounding devices drop, known as residual pressure. In this three-part over voltage,?lightning arrester?residual pressure on its own performance related to its residual voltage value is constant. Residual voltage on the grounding device can be connected to the grounding deflectors distribution transformer housing, then connected to the grounding device and how to eliminate them. And how to reduce the residual voltage of the leads has become the key to the protection of distribution transformers.

Lead impedance and current frequency through, the higher the frequency, the inductance of the wire, the stronger the greater impedance. From U = IR shows that to reduce the residual pressure on the lead, you have to narrow the lead impedance, and possible ways to reduce the lead impedance is to shorten the distance between the arrester from the distribution transformer to reduce the lead impedance, lower lead drop, so arresters should be installed in a more appropriate distribution transformer near point distance.

Composite arrester

MOA (MOA) during normal operation and distribution transformers in parallel, the terminating line, the lower end of the ground. When the line when an overvoltage occurs, then the distribution transformer will withstand over three parts dropout voltage generated through the arrester, wire and grounding device, called the residual pressure. In this three-part overvoltage, the metal oxide arrester residual voltage on its own performance related to its residual voltage value is constant. Residual voltage on the grounding device can be connected to the grounding deflectors distribution transformer housing, then connected to the grounding device and means to eliminate them. And how to reduce the residual voltage of the leads has become the key to the protection of distribution transformers. Leads through the current frequency impedance, varistors the higher the frequency, the stronger the wire inductance, impedance increases. Seen from U = IR, to reduce the residual pressure on the lead, you have to narrow the lead impedance, and possible ways to reduce the lead impedance is to shorten the distance between Composite arrester from distribution transformer to reduce the lead impedance, lower lead drop, so arresters should be installed in a more appropriate distribution transformer near point distance.

High-voltage surge arrester

MOA (MOA) is used to protect the transmission and distribution equipment insulated against overcurrent
Important protection of electrical pressure hazard, overvoltage arrester has fast response, voltage characteristic flat, stable performance,
Flow capacity, residual voltage, long life, simple structure, etc., it is widely used in power generation,
Transmission, substation, distribution and other systems. Composite coat metal oxide surge metal oxide varistor sizing is silicone rubber
Composite materials make coats, and traditional porcelain jacket metal oxide arrester, compared with a small size, light weight, rugged, stain resistance, good explosion-proof performance.