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.
Features
320*240 LCD screen with back light.
Using advanced circuit and DSP technology, to make resistance-capacitance and phase shift circuit more stable.
Friendly interface, easy operation.
Small size, easy to carry and convenient for on-site test.
With RS232 port, convenient to connect with PC.
Measure active component and reactive component of impedance or admittance for VT or CT secondary loop.
Automatically indicate polarity. If the polarity is incorrect, the instrument will be cut off automatically and alarm.
Specifications
Power supply: 220V±5V
Frequency: 50Hz±0.5Hz
Operation Temperature: 5℃-40℃
Relative humidity: <80%(at 25℃)
Altitude: <2500m
Measuring range
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
Basic error
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
Dx=2, Dy=5
Error of Percent table: 1.5%
Operation range:
Current: (1%－149%)In (In =5A)
(5%－149%)In (In =1A)
Voltage: (5%－149%) Un (Un =100V, 150V, 100V/)
(5%－149%)Un (Un =100V/3)
Working load:
Current: TO/TX <0.12Ω, cosΦ=1
Voltage: a/x <0.25VA (100V)
Polarity instruction
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.
Ratio instruction
When the current or voltage is above 5% of rated, error is over 30% and less than 180%, it will indicate ratio mistake.
Insulation and withstand voltage instruction:
Terminal TX and Ground terminal () is short circuit
The shell can withstand 1.5kV/1min voltage.
Power consumption: <25VA
Harmonic suppression ratio: >40db
Dimension: 260*350*150mm
Weight: about 6kg.
Features
320*240 LCD screen with back light.
Using advanced circuit and DSP technology, to make resistance-capacitance and phase shift circuit more stable.
Friendly interface, easy operation.
Small size, easy to carry and convenient for on-site test.
With RS232 port, convenient to connect with PC.
Measure active component and reactive component of impedance or admittance for VT or CT secondary loop.
Automatically indicate polarity. If the polarity is incorrect, the instrument will be cut off automatically and alarm.
Specifications
Power supply: 220V±5V
Frequency: 50Hz±0.5Hz
Operation Temperature: 5℃-40℃
Relative humidity: <80%(at 25℃)
Altitude: <2500m
Measuring range
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
Basic error
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
Dx=2, Dy=5
Error of Percent table: 1.5%
Operation range:
Current: (1%－149%)In (In =5A)
(5%－149%)In (In =1A)
Voltage: (5%－149%) Un (Un =100V, 150V, 100V/)
(5%－149%)Un (Un =100V/3)
Working load:
Current: TO/TX <0.12Ω, cosΦ=1
Voltage: a/x <0.25VA (100V)
Polarity instruction
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.
Ratio instruction
When the current or voltage is above 5% of rated, error is over 30% and less than 180%, it will indicate ratio mistake.
Insulation and withstand voltage instruction:
Terminal TX and Ground terminal () is short circuit
The shell can withstand 1.5kV/1min voltage.
Power consumption: <25VA
Harmonic suppression ratio: >40db
Dimension: 260*350*150mm
Weight: about 6kg.
