Product Details

Product Description

Description of ZN85G-40.5

porcelain breaker ZN85G-40.5 series high-voltage vacuum circuit breaker is a kind of indoor high-voltage switch equipment with 50/60HZ three-phase alternating current and 40.5KV rated voltage. The general framework composed by the body and operation system.

The product is used for industrial and mining enterprise, power plant and transformer substation to protect and control equipments, also it can be used in the locations where need frequent operations.

The composite insulted material insures no pollution and explosion danger with high insulation level.

The product conforms to IEC 62271, GB1984, JB3855 and DL1403.

Technical parameter

Item	Unit	Data
Rated voltage	Kv	40.5
Rated frequency	HZ	50/60
Rated current	KV	185
Rated lighting impact withstand voltage(peak)	Kv	95
Rated short-time power frequency withstand voltage (1 min)	KA	20	25	31.5
Rated short-circuit breaking current	A	630,1250	630,1250,1600	1250,1600,2000
Rated current	KA	20	25	31.5
Rated short-time withstand current(virtual value)	KA	50	63	80
Rated peak withstand current (peak)	KA	50	63	80
Rated operating sequence		Off-0.3S -CO-180S-CO
Marking and breaking times of short-circuit current	times	20
Duration of rated short-circuit current	s	4
Mechanical life	times	20000
Power frequency withstand voltage of secondary circuit	V	2000
Rated breaking current of single capacitor bank	A	630
Rated breaking current of back to back	A	400
Contact clearance	mm	22+/-2
Contact travel	mm	6+/-1
Bounce time of contact closing	ms	less than 3
Different period of three-phase at closing and tripping	ms	less than 2
Average closing speed	m/s	1.2+/-0.3
Average opening speed	m/s	0.65+/-0.15
Rated opening/closing operating voltage	V	AC110/AC220/DC110/DC220
Rated voltage of energy storage motor	V	AC110/AC220/DC110/DC220
Main conductive circuit resistance	Ω	less than 80

Picture show

1. How to order the products?

Answer:Send the inquiry with detail item descrpition or with Model number.If there is no packing demand we take it as sea-way packing.

If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.

2. About lead time and shipping time?Answer : The lead time depend on quantity of order. Usually shipped by sea, small order or urgent order we can send you by air after received your agreement.

3.Can I expect a quality products?Answer : Yes. All our activities are accredited to ISO 9001:2008 ,both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.

Trade Shows

Our story with customers

In 2005,we received the email from ALIBABA that a Russian customer would like to order the KYN28-12 indoor metal-clad enclosed switcgear.We confirm the product parameters and pictures carefully again and again with the client,the last communication is the most difficult in price,it is a psychological warfare,customers began to demand a 20% cut,we insist on our price,emphasis on the various advantages of our products with the high quality. After compared with other factory,Russia customer finally chose to coperation with our company.After more than 20 days,customers sent a email to tell us that they are very satisified with the goods. At the same time,he praised our good service attitude,delivery on time,good quality,until now the Russia client has been our long-term customer,also is our good friend.

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