UHV-H100A switch contact circuit resistance tester

NegotiableUpdate on 05/06

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The UHV-H100A switch contact circuit resistance tester adopts new power technology to continuously output high current for a long time. It adopts the national standard recommended DC 100A to directly measure the circuit resistance accurately, with stable performance and high resolution.

Product Details

At present, the conventional QJ44 double arm DC bridge is commonly used for measuring contact resistance in power systems. However, the test current of this type of bridge is only m, making it difficult to detect the defect of reduced cross-sectional area of the circuit conductor. When measuring the contact resistance of high-voltage switch conductive circuits, the measured value is several times larger due to the influence of oil film and oxide layer between the contacts, and cannot truly reflect the contact resistance value. To this end, the Ministry of Electric Power standard SD301-88 "Code for Handover and Preventive Testing of AC 500kV Power Equipment" and the new version of "Code for Preventive Testing of Power Equipment" stipulate that the measured current of contact resistance of circuit breakers and isolating switches shall not be less than 100A DC to ensure accurate test results.

UHV-H100A switch contact circuit resistance testerIt is designed based on the power implementation standard DL/T845.4-2019 of the People's Republic of China, using a combination of high-frequency switching power supply technology and digital circuit technology. It is suitable for measuring the circuit resistance of switch control equipment. The test current adopts the national standard recommended DC 100A. The circuit resistance can be directly measured at 100A and displayed digitally.UHV-H100A switch contact circuit resistance testerAccurate measurement and stable performance meet the requirements of on-site high-voltage switch maintenance and high-voltage switch factory circuit resistance testing by the power and supply departments.

Product nickname: Contact resistance tester, switch circuit resistance tester, contact circuit resistance tester, resistance circuit tester, intelligent circuit resistance tester, contact resistance measuring instrument, contact (circuit) resistance tester, circuit resistance tester

Product parameters

Technical specifications

measurement range	1 to 1999
resolution	1. Mu.. Omega..
test current	DC 100A
measurement accuracy	0.5%±1d
display mode	Current: Three and a half digit digital tube
display mode	Resistance: Three and a half digit digital tube
working power supply	AC220V±10% 50Hz
working environment	Temperature -10 ℃~40 ℃, humidity: ≤ 80% RH
Volume	390×300×150mm³
weight	6kg (excluding attachments)

Note:

1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued.

2. For more information on ultra-high voltage products, please enter the product center.

Product features

1. High current: The circuit resistance tester adopts new power supply technology, which can continuously output high current for a long time, overcoming the drawbacks of instantaneous current in pulse power supply. It can effectively penetrate the oxide film of switch contacts and obtain good test results

2. Strong resistance: Under severe interference conditions, the LCD screen position data can remain stable within ± 1 word range, with stable readings and good repeatability

3. The circuit resistance tester has a long service life: all use high-precision resistors, effectively eliminating the influence of environmental temperature on measurement results. At the same time, the use of connectors enhances the anti vibration performance

4. Convenient to carry: small size, light weight

UHV-H100A开关接触回路电阻测试仪