HES-1W Low-Current CT Accuracy Testing System

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PRODUCT DESCRIPTION

1. Type of tested object: Low-Current CT

2. Type of object CT: Current Input / Current Output

3. Measure item: Ratio errors & Phase errors of the Small-Current CT

4. Testing system included:

HES-1W Low-Current CT Tester

HLW-3 Two-Stage Standard Current Transformer

HES CT Test Power

5.Main Technical Datas:

1) HES-1W Low-Current CT Tester (Bridge)

Product model:	HES-1W
Display model:	LED
Measure item:	Ratio errors & Phase errors of the low-Current CT
Rated current:	1mA, 2mA, 5mA, 20mA, 50mA
Multiplier:	0.5, 1, 1.5, 2, 3
Accuracy class:	±2%
Operation range:	(1%-200%).In
Frequency:	50/60Hz
Ratio error range:	±0.0001% ~ ±19.99%（Three positions: 1.999', 19.99', 199.9'）
Ratio error range:	Minimum resolution：0.0001%.
Phase error range:	0.01' ~ ±900'（three positions: 9.00', 90.0', 900'）
Phase error range:	Minimum resolution: 0.01'
Alarm Function:	Provided the sound & light alarm function when the polarity abnormal or ratio inconsistent.
Provided load for object CT:	0Ω, 5Ω, 10Ω, 20Ω, 30Ω, 50Ω, 100Ω, 200Ω, 250Ω, 500Ω (COSφ=1.0)
Input load on standard side:	10Ω (COSφ=1.0)
Communication Interface:	Provided the RS232 serial communication interface
Power supply:	AC 220V ± 10%
Power consumption:	< 20VA

2) HLW-3 Two-Satge Standard Current Transformer

Product Description:	HLW-3 Two-Stage Current Transformer
Frequency:	50Hz/60Hz
Primary Current (A):	0.6，1，1.5，2.5，3，4，5，6，7.5，8，10，15，20，30，50，60
Secondary Current (mA):	1, 1.5，2，2.5，3，10/3，4，5，20/3，7.5，8，10，15，50/3，20，25，30，100/3，50
Rated Current Ratio:	Arbitrary combination of Pri,Current and Sec.Current
Accuracy Class:	0.02%
Operation Range:	(5%-300%).In
Secondary Burden:	10Ω
Power Factor:	COSΦ=1.0
Voltage Level:	AC 600V
Insulation:	Air
Operating Condition:	Temperature: -5 oC ～ +40 oC
Operating Condition:	Relative Humidity (RH): up to 85% (max 90%)
Dimension (mm) :	460x380x160
Weight ( kg ):	～15kgs

3) HES CT Test Power

Input Voltage:	AC 220V±10% 50/60Hz
Output Current:	AC 5A, 50A, 100A
Rated Capacity:	～500VA
Output Voltage:	Provided the Coarse adjustment & Fine adjustment
Adjustment Model:	Manual adjustment