High-precision Switch Loop Resistance Tester Electronic Shaking Table Marine Ohm Meter

What is Done During Contact Resistance Testing?

The two common checks conducted on the contacts of a circuit breaker are the visual inspection check and the contact resistance check.

1.The Visual inspection check involves examining the contacts of the circuit breaker for any pitting marks due to arcing and worn or deformed contacts.

2.The second check is the contact resistance measurement. This involves injecting a fixed current, usually around 100A, 200A and 300 A through the contacts and measuring the voltage drop across it.This test is done with a special contact resistance measuring instrument. Then, using Ohm’s law, the resistance value is calculated. The resistance value needs to be compared with the value given by the manufacturer. The value should also be compared with previous records.

Both these tests need to be done together. As there are cases of contacts having good contact resistance yet being in a damaged conditions. Thus, for a contact to be certified healthy, it needs to have a good contact resistance and should clear the visual inspection test.

CHONGQING GOLD

MECHANICAL & ELECTRICAL EQUIPMENT CO., LTD

Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd. mainly design and manufacture the oil purifier and electrical testing equipment for more than 11 years.

After several years’ development, our products have become high intelligent and wide coverage. And our company has become one of the leading manufacturer of oil purifier and electrical testing equipment in China;

We have developed sales channels in many countries such as UAE, Saudi Arabia, Malaysia, Thailand, Pakistan, India, Germany, Belgium, USA, Mexico, Kenya, Nigeria, South Africa and other countries worldwide.

And we have gained strong advantage and high reputation in international market.

We have persisted on the business idea of "Integrity Basis and Quality First" for the stable and constant development. We are making effort to develop together with customers from both domestic and abroad on the basis of reciprocity. Client, quality and service are our supreme target!

Exhibition Abroad

Chongqing Gold Mechanical & Electrical Equipment Co.,Ltd has become a three-tier enterprise in safety production standardization, passed the ISO9001, quality management system certification, won the "high-tech enterprise" certificate,won the "high-tech products in Chongqing" certificate. The company's output has hit new heights.So everyone can choose our products with confidence.

Q1 : What's the delivery lead time?

A: Y"For most of the products, delivery lead time is 10 days after the order is confirmed; For some customized products, please check with the sales person."

Q2: What's the payment term?

A: "For total amount below USD3,000.0, payment term is 100% T/T as deposit; For total amount above USD3,000.0, payment term is 30% T/T as deposit, the balance before delivery; The payment term is also negotiable."

Q3: What's the warranty period?

A: "Warranty period is 1 year"

Q4:What is your terms of delivery?
A:We accept EXW,FOB, CFR, CIF, etc. You can choose the one which is the most
convenient and cost effective for you.

Q5:Could you please tell me the Warranty Period of your product?

A:Our warranty period is one year free and lifelong maintenance, and if the product we sell
is damaged (if not man-made damage), in the first year,we will send free parts for
replacement.Over the warranty,maintenance is paid service.

Q6:Do you have Technical Backup to all customers from different countries?
To be surely,our technical support is always available and quick response.
We are manufacturer of so much on site testing experience and understand how to deal
with your problems.

Welcome to visit our website, welcome your inquiry.

Chongqing GOLD Mechanical & Electrical Equipment CO.,LTD.

Add:25F,Huarun Center,Xiejiang Street,Jiulongpo District,Chongqing,China,400050

Mobile:+8615922982462

Website:http://www.cqgoldequipment.com/