Description

ZYJW  wireless secondary step down and load tester is intelligent and wireless auto test instrument for voltage transformer secondary step down and load. It is totally instead of old type instrument, no need long voltage test cable, avoid PT secondary short-circuit happening.

Energy measurement big error is common problem, and voltage transformer secondary circuit step down is big factor of energy overall error (percentage of amplitude difference between voltage transformer secondary terminal and load terminal VS seoncdary real voltage ).

ZYJW wireless secondary step down and load tester is small size, light weight, high accuracy and reliablity, easy wiring and operation. It is big  big screen LCD, kind interface.

Features:
 

• Wireless auto test *-phase *-wire and *-phase *-wire voltage transformer secondary step down, no need long voltage cable, avoid any fault happening; if no GPS signal, also use sync cable to test.
• Auto calculate *-phase transformer ratio difference, angle difference, integrated errors.
• Auto test and store error measurement data in all types of wiring, and auto calibration in the test hereafter.
• Software calibration, no need hardware. 
• One screen shows voltage, current, angle, power factor, active power, passive power, apparent power and waveform.
• Harmonic wave test function, can test *2 times and bellow harmonic content of voltage and current.
• Internal big volume rechargeable battery, fast and conveniently.
• Remaining battery volume indication.
• Big screen and color LCD, kind interface, auto contrast and brightness adjustment.
• Micro-printer for test data printing anytime.
• **0 sets data storage function.