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HM2008 Transmission Line Parameter Tester

the instrument can accurately measure all kinds of high voltage transmission lines,such as overhead lines, cables, overhead mixed cable, power frequency parameters of multi circuit on the same tower erection such as positive capacitance, positive sequence impedance, zero sequence capacitance & impedance, mutual inductance and capacitance coupling...

Quickly and accurately complete cable measurement of positive capacitance,zero sequence capacitance, positive/zero sequence impedance, it can also test mutual inductances and coupling capacitance between lines;


During traditional power frequency parameters testing of power transmission lines, the power supply was usually provided by three-phase auto transformer and large capacity isolation transformer, using CT & PT electric power measurement as electrical signal transform, then use pointer high precision voltmeter, current meter, power meter to measure the various electrical parameters, finally calculate results of power frequency parameters of test transmission line, so it made complete set of test equipment very large volume and heavy weight, it’s necessary to move with a crane, it is not conducive to work  on-site, and because of measuring power frequency supply, power line interference signal is easily mixed with coupling, to bring large measurement errors, so it greatly needs to improve signal noise ratio, to develop power supply capacity and size.

The instrument can accurately measure all kinds of high voltage transmission lines such as overhead lines, cables, overhead mixed cable, power frequency parameters of multi circuit on the same tower erection such as positive capacitance, positive sequence impedance, zero sequence capacitance & impedance, mutual inductance and capacitance coupling...

The instrument has one unit structure, built-in variable frequency power supply module, variable frequency voltage output power supply, it adopts digital filter technology, to avoid   power frequency interference electric at field.


1. Quickly and accurately complete cable measurement of positive capacitance,zero sequence capacitance, positive/zero sequence impedance, it can also test mutual inductances and coupling capacitance between lines;

2. Strong anti-interference ability, it can accurately measure under ratio 1:10 of different frequency & power frequency;

3. External wiring is simple, only one time connection is okay;

4. The instruments built in high speed single chip as the core, to realize the integration of test power, instrumentation, computational model, a truck equipment was condensed into one unit instrument.

5. The instrument adopts 320 * 240 large LCD display, american rotary mouse operation, embedded printer to print the results, operation is very simple;

6. The instrument test process is quick, it can automatically complete test mode control, pressure control and data measurement and lifting calculation, print measuring results, 1 minute can finish an order parameter measurement, test time is short, workload is greatly reduced, 20 minutes can complete traditional test method;

7. Good measurement accuracy, the instrument itself provides three groups close to the power frequency different frequency: 42.5Hz/57.5Hz; 45Hz/55Hz; 47.5Hz/52.5Hz; easy separation power and clutter interference, effectively realize high precision measurement of small signal.

Technical Parameters

Power supply

3 phaseAC380V±10%15A50Hz (RMS)

Internal different frequency power

Max output voltage

3 phase0200V(RMS±1%)

Max output current


Output frequency

47.5Hz52.5Hz (±0.1HZ)

Effective power

Power factor 0.11.0: ±0.5% reading ±1digit

Active power

47.5Hz52.5Hz (±0.1HZ)

Max output power

3 phase, 3×3kW(9kW)

With measurement of two-phase flow line(including DC transmission lines and electrified railway)

Measurement range





Impedance angle


Testing line length:0.3km to 400km

Measurement resolution







Measurement accuracy


≥1μF: ±1% reading ±0.01μF

1μF: ±3% reading ±0.01μF


≥1Ω: ±1% reading ±0.01Ω


: ±3% reading ±0.01Ω

Impedance angle

Working condtion, current0.1A



Over-current,over-votlage,grounding,3 phase insurance

Waveform distortion

Sine waveform, distortion 2%

Insulation & shock protection




Input terminal


10 MΩ


Output terminal

10 MΩ


Voltage measurement

10 MΩ

Withstand voltage

1.5kV1minNo breakdown arc; suitable for long distance, bad road transportation, 0.5m drop test


Anti-jamming current

2 terminal short circuit grounding of cable head and end:  ≥50A.

It can accurately measure under output signal and interference signal ratio 1:10.

With 2 phase lines power frequency parameter measurement.



Host 65Kg

Working Condition








1. Are you manufacture ?

Yeah, we are manufacturer professional in design and produce high voltage test equipment with nearly 20 years experience .


2. When can I get the price ?

We usually quote within 6 hours after get your inquiry . If you are very urgent to get price, please feel free to contact us by Wechat&Whatsapp +86-13720145441 or send us by email, so that we will regard your inquiry priority .


3. Do you supply OEM?

 Of course, we supply OEM.


4. What about leading time for production ?

Honestly , it depends on order quantity and the product . Usually lead time is within 7 working days after deposit .


5. What is your terms of delivery ?

We accept EXW, FOB, CFR, CIF, DDU, etc . You can choose the one which the most convenient and cost effective for you .


6. What’s your payment terms :

TT payment, L/C at sight, Paypal, Western union, etc.


7. How much is the shipping cost and time ?

This is depend on the size and weight of your product, and the method of shipping ( by sea/ by ari/ by Express) and your designated port . Kindly afford us above information to check shipping cost and time for you .


8. What’s the warranty period ?

Our warranty period is one year free and lifelong maintenance .

If produce damage within one year ( not man-made damage ), we will send you spare parts for replacement .  After one year, maintenance is paid service .

9. What kind of Certificate you can provide ?

We can provide CE mark, ISO9001 quality certificate the third part Calibration Certificate (CNAS), factory test report .


10. Do you have Technical Backup to all customers from different countries ?

Surely, we have rich experience engineer to afford professional technical support and quick response to your technical questions .

We are manufacture with rich on site testing experience and understand how to deal with your problems . And our engineer can visit your company to afford technical support face to face if necessary .

Factory test and shippment

We will do factory test for every product before devilering, to ensure qualified of the product.

We will pack the product carefully and choose suitbale shippment for client,to ensure the safe arrival.

Installation and commissioning

we provide installation and commissioning assistance to get you up and running. Domestically within China or internationally, we will be there to support you. During the installation, integration and operation of a new test system, a variety of special services are involved. If it ’ s necessary, we can offer oversea commissioning service for our clients.

Service and support

In any fault case of our product, we will arrange engineer to deal with your problem within 24hours

Service guarantee

Contact purchase

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