HES-1E Low-Voltage PT Accuracy Testing System

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PRODUCT DESCRIPTION

1. Type of tested object: Low-Voltage PT

2. Type of object PT: Voltage Input / Voltage Output

3. Measure item: Ratio errors & Phase errors of the Small-Voltage PT

4. Testing system included:

HES-1E Low-Voltage PT Tester

HJF-2 Inductive Voltage Divider

HES PT Test Power

5. Main Technical Datas:

1). HES-1E Low-Voltage PT Tester (Bridge)

Product model:	HES-1E
Display model:	LED
Measure item:	Ratio errors & Phase errors of the low-Voltage PT&CT
Rated voltage:	22.5mV, 150mV, 200mV, 225mV, 1.5V, 1.625V, 2V, 3.25V, 4V, 6.25V
Multiplier:	1/3, 1/2, 1/√3, 1
Accuracy class:	±2%
Operation range:	(20%-120%).Un
Frequency:	50/60Hz
Ratio error range:	±0.001% ~ ±19.99%（Two positions: 1.999%, 19.99%）
Ratio error range:	Minimum resolution：0.001%.
Phase error range:	0.1' ~ ±900'（Two positions: 90.0', 900'）
Phase error range:	Minimum resolution: 0.1'
Alarm Function:	Provided the sound & light alarm function when the polarity abnormal or ratio inconsistent.
Input Load:	- On Standard side: ＞10MΩ, COS==1.0 - On Test Object side: ＞10MΩ, COS==1.0
Communication Interface:	Provided the RS232 serial communication interface
Power supply:	AC 220V±10%
Power consumption:	< 20VA

2) HJF-2 Inductive Voltage Divider

Accuracy Class:	0.005%
Input Voltage:	AC 100V, 150V, 300V, 600V (AC 0～600V)
Variablle Output Voltage:	AC 0- 11.111V
Power Factor:	COSΦ=1.0
Operating Range:	(20%-120%) x Un
Frequency:	50/60Hz
Insulation：	Air
Operating Condition:	Temperature: 10 oC～+40 oC
	Relative Humidity (RH): up to 85% (max 90%)

3) HES PT 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