DCT-410A Voltage Transformer Field Calibrator

DTC-410A Transformer Field CalibratorApplication: CYTC-410A Transformer Field Ca...

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DTC-410A Transformer Field Calibrator

Application: CYTC-410A Transformer Field Calibrator is a third-generation intelligent testing device designed for field and laboratory assessment of Current Transformers (CTs) and Potential Transformers (PTs). Utilizing advanced DSP technology and a heterodyne measurement principle, it overcomes limitations of traditional methods by minimizing temperature and frequency interference. The calibrator supports accuracy classes from 0.01 to 10, covering a wide range of secondary currents (1A/5A) and voltages (100V, 100/√3V, 150V, etc.

1. Features:

Advanced Technology

o Employs DSP-based heterodyne measurement for high precision

o Self-adjusting circuitry maintains accuracy under varying conditions

Wide Compatibility

o Tests both CTs (1A/5A) and PTs (up to 220V)

o Supports Class S transformers (1% rated value operation)

User-Friendly Design

o Large LCD with intuitive interface

o Automatic polarity detection and fault alarm

o RS232 interface for PC connectivity

Enhanced Safety

o Isolated differential current protection

o Lightweight (field-portable) construction

Versatile Functions

o Measures impedance/admittance components

o Doubles as an AC potentiometer for micro-signal testing

o Validates transformers at 5% of rated values (1% for Class S)

Standards Compliance

o Exceeds Class 2 requirements

o Compatible with wholeness/element verification methods

Specification:

Working Condition:
Temperature: 5℃-40℃	Relative humidity:<80%(25℃)
Altitude: <2500m	Power Frequency: 50Hz±0.5Hz
Power Voltage: 220V±5V
Measuring Range:
In-phase component(%):0.0001~200.0	Resolution: 0.0001
Orthogonal Component (min):0.001~ 700.0	Resolution: 0.001
Impedance(Ω):0.0001~20.0	Resolution:0.0001
Admittance(ms):0.0001~20.0	Resolution:0.0001
Basic Error
In-phase Component:	ΔX=±(X×2%+Y×2%)±Dx(withClass 1 to spare)
Orthogonal Component (with Class 1 to spare)	“X”,“Y”——Values Displayed
“Dx, Dy”——Quantified Error Dx=2, Dy=5	Percentage: Class 2 (with Class 1 to spare)
Working Range:
Current:	(1%－149%)In (In =5A)
Current:	(5%－149%)In (In =1A)
Voltage	(5%－149%)Un (Un =100V，150V，100V/ )
Voltage	(5%－200%)Un (Un =100V/3)
Work Load:	Current:TO to TX<0.12Ω cosΦ=1.0
Work Load:	Voltage: a to x<0.25VA (100V)