Specifications

material: ZnO varistor, silicon rubber housing
certification:ISO9001
package: Carton
confirm to IEC60099-4, IEC37-199/CDV

Introduction: 

Certain designs of the polymer housed arresters were in fact impossible to construct until the gapless metal-oxide technique was introduced. As a major progress, metal oxide arresters could be built with only one single effective active element, namely the column of the metal oxide resistors. High demands are, however, made on these metal oxide resistors, as they combine all the functions, which previously had been shared among the different components of the gapped arrester. In this way they have to be ageing resistant while being subjected to constantly applied operating voltage. They must be able to absorb the energy injected during a discharge, and they should subsequently limit the follow current (leakage current) to value small enough for thermally stable operation.

 

Application: 

The low voltage  type surge arrester mainly used in low-voltage distribution cabinet,switchgear and control cabinet, so as to protect electrical equipment from being demaged by over-voltage. In medium-voltage distribution systems the arresters are widely spread over the whole network as they are normally directly arranged either, for instance, at the pole-mounted transformers, or at the cable terminations.

 

 

Construction: 

The metal oxide resistor column, together with the accompanying supporting construction comprises the active part of the arrester. The column consists of individual metal oxide resistors stacked on top of each other.

 

Normal service conditions:

1. The ambient air temperature is no higher than +40 degree. no lower than -40 degree.
2. The altitude above sea level does not exceed 2000m
3. Power frequency 48Hz~62Hz
4. Maximum wind speed does not exceed 35m/s
5. The earthquake intensity does not exceed 7 degrees
6. The voltage that long-time exerted shouldn't exceed its Max MCOV

 

Technicial parameter:

 

MOA Type	Sys R.V	MOA R.V	MCOV	D.C.U1mA	1/10μs steep current impulse	8/20μs lightning current impulse	30/60μs Switching current impulse	2ms rectangular current impulse withstand	4/10μs high current impulse withstand
	KV(r.m.s)			≥KV	≤KV			A	KA
HY1.5W- 0.28/1.3	0.22	0.28	0.24	0.6		1.3		75	25
HY1.5W- 0.5/2.6	0.38	0.5	0.42	1.2		2.6		75	25
HY1.5W- 0.8/3.9	0.88	0.8	0.68	1.8		3.9		75	25

 

 

Characteristics:

1. Non-tracking and low erosion rates in polluted an non-polluted environments
2. long term weather ability, resistance to thermal ageing
3. UV resistance, chemical resistance.
4. Tough, tear and impact resistance.

 

 

 

 

Safety and reliability are vital in high-voltage products and Wenzhou Mingneng Electric Co., Ltd is committed to pioneering improvements in performance for our customers at all levels. Our development teams work to generate a superior range of high performance products. All products developed using our extensive service experience and within the constraints of international standards including IEC and many national standards.