Wireless Secondary Step Down And Load Tester

Our organization manufacturing, exporting and supplying ZYJW Wireless Secondary Step Down And Load Tester which 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.
Working environment
Environment temperaturei -10a i 40a
RHi a 80%
Test accuracy
Test accuracy is 1 class.
Ratio differencei I f =A i 1%A f+1%A I'+0.01i i %i
Angle differencei I I'=A (1%A f+1%A I'+0.1)i pointi
Conductancei G=A (1%A G+0.01) mS
Susceptancei I'=A (1%A I'+0.01)mS
Loadi S=A (1%A S+0.1)VA
Resistancei R=A (1%A R+0.1)IC
Reactancei X=A (1%A X+0.1)IC
Chargei AC176V~264Vi 45-55Hz
Basic error
Ratio difference i 0.02%
Angle difference i A 1a
Conductancei A i 1% conductive reading+1% susceptance reading + 1 wordi mS
Susceptancei A i 1% susceptance reading+1%conductive reading+ 1 wordi mS
Insulationi insulated resistance obetween voltage/current input terminal to shell a Y100Ma a