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ZEDT-10A grounding down conductor continuity tester (touch screen version)

The output voltage can reach 24V, the measurement speed is fast, and it can be applied to the measurement of resistive, capacitive and weak inductive resistance.

Key words:

measurement

output

power

ZBHQ-30AD overvoltage protector tester

As a new type of overvoltage protection device in power system, three-phase combined overvoltage protector has been widely used in 35kV and below power system to limit lightning overvoltage, vacuum circuit breaker operating overvoltage and various transient overvoltage that may occur in power system, which can effectively protect the insulation of electric equipment such as motor, transformer, switch, capacitor, cable, bus and so on from damage, it can play a reliable role in limiting the overvoltage between phases and relative ground, which is not available in traditional lightning arresters.

Key words:

overvoltage

protector

power

ZEHL-100A loop resistance tester

At present, the conventional QJ44 double-arm DC bridge is generally used in the power system for measuring contact resistance, and the test current of this kind of bridge is only mA level, so it is difficult to find the defect of reducing the cross-sectional area of the loop conductor. When measuring the contact resistance of the conductive loop of high-voltage switch, due to the influence of oil film and oxide layer between contacts, the measured value is several times larger and cannot truly reflect the contact resistance value. To this end, the Ministry of Electric Power's standard SD301-88 "AC 500KV Power Equipment Handover and Preventive Test Procedures" and the new version of "Power Equipment Preventive Test Procedures" stipulate that the measured current of contact resistance of circuit breakers and isolating switches shall not be less than DC 100A to ensure accurate test results.

Key words:

resistance

power

current

ZEDL-500A high current generator

ZEDL-500A high-current generator, referred to as (converter), is a test equipment developed by our company. It integrates the advantages of similar products at home and abroad. It adopts numerical control technology and has strong anti-interference ability. Compared with the previous generation of converter, it has the advantages of large output power, small volume and light weight due to the use of low power consumption, large capacity self-coupled voltage regulator and high permeability iron core.

Key words:

Transformer detection instrument

advantages

power