GDHG-103 system is to calibrate CVT, CT/PT in the substation or power plant.
1. AC Resonant Test System, mainly used to inject high voltage to CVT,CT/PT.
2. GDHG-103 CT/PT Calibrator
3. HJ-275/132G3 Standard VT
4. FY95 VT load box
5. Other accessories
GDHG-103 VT Calibrator is mainly used to calibrate voltage transformer. It should be used together with other equipment such as load box, standard VT etc.
Cophase component(%): 0.0001-200.0, resolution: 0.0001
Quadrature component(min): 0.001-700.0, resolution: 0.001
Impedance(Ω): 0.001-20.0, resolution: 0.0001
Admittance(ms): 0.0001-20.0, resolution: 0.0001
Cophase component: ΔX=±（X×2%＋Y×2%）±Dx
Quadrature component: ΔY=±（X×2%＋Y×2%×34.48）±Dy
X,Y-- Display value of instrument
Dx, Dy-- Quantization error
(5%－149%) Un (Un =100V, 150V, 100V/√3)
(5%－149%)Un (Un =100V/3)
Current: TO/TX <0.12Ω, cosΦ=1
Voltage: a/x <0.25VA (100V)
When the current or voltage is at 5% of rated, error is over 180%, it will indicate polarity status.
Note: If the current is above 10% of rated current/voltage, but there is no polarity instruction, it means there is fault, please do not increase current or voltage.
Otherwise, the instrument will burn out.
When the current or voltage is above 5% of rated, error is over 30% and less than 180%, it will indicate ratio mistake.
Terminal TX and Ground terminal () is short circuit
The shell can withstand 1.5kV/1min voltage.
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