HEQG Secondary Voltage Drop& Load Tester

HEQG Secondary Voltage Drop& Load Tester

Classification: Measurement Product/Secondary Circuit Test

Reference standard: SD109-83

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction
Using high-capacity lithium batteries as the power supply, not only can protect the system security and can be compared to an instrument to provide clean power to avoid the on-site power interference, to ensure accuracy.
Alternative name
Secondary voltage drop tester, secondary load tester, secondary voltage drop and load measuring instrument, the second voltage drop and load line tester, transformer secondary voltage drop and load line tester
The Characteristics of the products
1. Can realize three phase three wire, three phase four wire and single test.
2. Use industrial plastic case, strong and durable, ensure the safety of the test personnel and system.
3. Can auto shift the measurement range , ensure the accuracy.
4. Electronic circuit combined with DSP technique, good stability and strong anti-interface ability.
5. Auto calculate all the parameters refer to load after finished the test, convenient customers to analyze and test.
6. With LCD, menu operation, the test results can be stored after power off, can transmit the data connect with computer.
7. Use high capacity 7.2V11Ah lithium battery as power supply, no effect to loop, prevent the protection of the system. It also can be used if there was not power supply source on site.
8.Use clamp ammeter to sample current in the secondary load test, need not disconnect the secondary circuit. Realize online test without power off.
9. Working time up to 24 hours (longest), can test under charged state.
10. With deft charger, convenient to measure, can connect with external charger to test if low power.
11. Small in volume , light in weight. 
12. Wide secondary current / voltage measurement range. Can analyze the resistance and impedance of 1mΩ, test  the online actual load of S degree CT (secondary rated current is 5A) when the working current is 50Ma. Can analyze the conductance and susceptance of 0.001mS when the working voltage is 5V. 13. Can store 480 groups test results, can save for 10 years after power off. 
14. With LCD and RS232 communication interface.
The parameters of the products

1.Environmental Conditions
-  Temperature : -5  ~ 40 
- Relative humidity : < 95% (25 ℃)
- Altitude : <2500m
- Outside interference : no particularly strong vibration, no particularly strong electromagnetic fields
Two secondary voltage drop test apparatus main technical indicators
1 ) Measuring range : worse than : 0.001 % ~ 19.99% angle difference : 0.01 ' to 599 '
2 ) Resolution: worse than : 0.001% angle difference : 0.01 '
3 ) The instrument basic error
-X = ± (1% × X +1% × Y ± 2 words ) ;
-Y = ± (1% × X +1% × Y ± 2 words ) .
2words - the instrument quantization error
4 ) The voltage meter accuracy: 0.5%
5 ) Working Range
- Voltage : (50 ~ 120) V
6 ) The instrument indicates the action value ( an error )
- Error: more than 20% worse than or angular difference is greater than 600 ' .
- Voltage : Voltage <2.0V.
3.PT secondary load test apparatus main technical indicators
1). PT secondary load test
- Admittance measuring range : 0.1ms-50.0ms
- Admittance measurement accuracy:
- Secondary voltage (50V-120V)
 X= ± (1% × X +1% × Y ± 2 words )
 △Y= ± (1% × X +1% × Y ± 2 words )
2 words - the instrument quantization error
Note: The following measured values 0.2mS , the test voltage shall be maintained at 50V or more, while paying attention to the feedthrough wire clamp remain centered . The instrument quantization error of five words
2 ) The voltage meter: 0.5%
4.CT secondary load test apparatus main technical indicators
- Impedance measurement range : 0.1Ω-50.0Ω
- Impedance Measurement Accuracy:
 △X= ± (1% × X +1% × Y ± 2 words )
 △Y= ± (1% × X +1% × Y ± 2 words )
2 words - the instrument quantization error
Ammeter head : 1%


Power supply: AC110V/115V/120V/127V/220V/230V/240V optional
Input frequency: 50Hz/60Hz optional
Note: The users can select the corresponding power which based on their local supply voltage and frequency, and we will confirm it before the delivery (or inform us that the goods will be used in which country advance)

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