I. Product Introduction

1.1 Product Overview

In the handover test and preventive test of power equipment, the low-voltage test items of circuit breakers usually include mechanical characteristics test and circuit resistance test, and in order to complete the test task, it is usually necessary to carry two sets of equipment for the test. Even if a few devices support two test functions, most of them can only carry out single-phase circuit resistance each time, the wiring and operation is slightly cumbersome, and the work efficiency needs to be improved.

The design team of this machine has many years of field work experience, and has full knowledge and understanding of the above-mentioned actual situation, and through hardware design and software optimization, a set of solutions is proposed in a targeted manner. On the premise of retaining the realization of a single test function, an intelligent test mode is innovatively realized. This mode not only meets the testing needs of the site, but also greatly simplifies the wiring and operation, supplemented by the real voice broadcast and wireless control of intelligent devices, making the testing process more concise, convenient and efficient.

1.2 Implementation Standards

GB50150-2016 "Electrical installation project electrical equipment handover test standards         

DL_T 596-2021 "Preventive Test Procedure for Electric Power Equipment

DL/T 846.3-2017 "General Technical Conditions for High Voltage Test Equipment Part 3: High Voltage Switchgear Integrated Characteristics Tester

DL/T 845.4-2019 "General technical conditions for resistance measuring devices Part 4: Circuit resistance tester

DL/T 845.3-2019 "General technical conditions of resistance measuring device Part 3: DC resistance tester

1.3 Performance Characteristics

◆It is applicable to the mainstream models of high-voltage circuit breakers at home and abroad, and is equipped with linear travel sensor and incremental rotation sensor. Among them, the incremental rotation sensor installation can be realized without direction, with a special plum connector, which makes the installation more simple and stable.

◆Provide special navigation plug interface for 10kV high-voltage circuit breaker to realize fast, safe and reliable closing and breaking and energy storage coil wiring, and eliminate the safety hazards caused by wiring.

◆With 7-inch resistive color touch screen, full Chinese menu display, real voice broadcast, support for intelligent devices wireless connection control, can generate specific format Word test report, convenient data storage and printing.

◆The test items include circuit breaker mechanical characteristics test, breaking and closing coil resistance test, circuit resistance test, low voltage action voltage test and energy storage motor energy storage. Test items can be freely selected, the instrument intelligent sorting, to eliminate repeated invalid measurement.

◆The instrument supports a maximum of 999 sets of test data storage, test parameters are not lost in power failure, mechanical characteristics test can generate time-displacement diagrams and dynamic current schematic diagrams, speed data can be measured and analyzed again. Provide U disk storage interface, convenient for data storage.

◆Provide USB communication interface, which can realize secondary programming control.

1.4 Technical parameters

◆Using environment

Input power: 220V±10%, 50Hz±10%     

Atmospheric pressure：86～106kpa

Temperature: -10～40℃           

Humidity：≦80%RH

◆Safety performance

Insulation resistance: >2MΩ

Dielectric strength: power to the chassis frequency 1.5KV withstand voltage for 1 minute, no flash and flying arc

◆Basic parameters:

Mechanical characteristics of the circuit breaker test parameters table (Table 1)

Loop resistance test parameters table (Table 2)

DC resistance test parameters table (Table 3)