On April 12, the 10kV underground cable of Wuhan Jiaotong school broke down, resulting in power failure and darkness in all student dormitories. As the direct buried cable is adopted in the campus, the cable direction in the campus is complex, and the two units previously contacted by the school…

Loop resistance tester will inevitably encounter various abnormal problems in our daily use. Let's talk about how to solve these abnormal problems.1、 Phenomenon: ZC-302 loop resistance tester is connected to AC 220V AC power supply, the fan has no running sound, and press the "test switch", and the ammeter and…

This product is developed by using modern electronic technology and tooling technology under the guidance of electromagnetic field theory, according to the field identification problems of multiple cables urgently needed to be solved by high-voltage cable construction and installation and maintenance personnel. According to the market feedback and customer demand,…

ZC-610C high precision three-phase phase voltammeter is an instrument for measuring three-phase volt ampere electrical parameters.   The host can complete the three-phase voltage, current, phase, frequency, power, power factor, three-phase imbalance and other electrical parameters of high-precision measurement.         Function description This function displays the amplitude…

ZC-610A digital double clamp phase voltammeter is a kind of high precision, low price, hand-held, dual channel input measuring instrument designed for on-site measurement of voltage, current and phase. It is convenient to measure the phase between U-U, I-I and U-I, distinguish the phase sequence of inductive circuit, capacitive circuit…

ZC-602 distribution transformer area (Branch) identification instrument is composed of host, handheld extension and related accessories. The communication between host and handheld extension adopts low-frequency zero crossing communication technology and pulse current detection technology, which can accurately identify station area, phase and branch under the circumstance of adjacent substations share…

ZC-208 transformer DC resistance ratio loss characteristic comprehensive tester is the latest professional transformer test equipment launched by our company, which can be used for the transformation ratio and DC resistance test of various transformers in power system, especially suitable for the test of Z-winding transformer, rectifier transformer and balance…

1. It can measure no-load current, no-load loss, short-circuit voltage and short-circuit (load) loss of transformer. 2. Zero sequence impedance test of transformer can be carried out. 3. The internal range of the instrument is automatically switched, allowing a wide range of voltage and current measurement and simple wiring. 4.…

Dielectric loss tester is a high-precision instrument for automatic measuring dielectric loss tangent and capacitance of various high-voltage power equipments which used in power plants and substations. Due to the use of frequency conversion technology, it can ensure accurate measurement under strong electric field interference. The instrument is operated by…

In the production process of semi-finished and finished products of power transformer, before the newly installed transformer is put into operation and according to the preventive test regulations of the Ministry of power of China, it is required to test the turn ratio or voltage ratio of the running transformer.…