Product Details


■ Product Overview

This instrument can accurately measure various high-voltage transmission lines. ( Power-frequency parameters for overhead lines, cables, mixed overhead–cable systems, and multi-circuit configurations on the same pole ( Positive-sequence capacitance, zero-sequence capacitance, positive-sequence impedance, zero-sequence impedance, mutual inductance and coupling capacitance, interphase capacitance, etc. )

It adopts an integrated structure with a built-in variable-frequency power supply module, enabling frequency‑ and voltage‑adjustable power output. Utilizing digital filtering technology, it effectively eliminates interference from power‑frequency electric fields, fundamentally resolving the challenge of accurate measurements in the presence of strong electric field disturbances.

■ Product Features

Strong anti-interference capability, capable of operating when the ratio of out-of-band signals to power-frequency signals is 1:10 Accurate measurement under the specified conditions.

External wiring is straightforward: a single connection to the test circuit’s lead suffices to perform all line‑parameter measurements, thereby fully addressing the issues inherent in conventional testing methods—such as cumbersome wiring changes, interference, stability, and accuracy.

The instrument employs a high-speed microcontroller as its core, integrating the test power supply, measurement instruments, and computational algorithms into a single unit, thereby condensing the functionality of an entire truckload of equipment into one compact device.

The instrument employs 8 A color touchscreen display and an embedded miniature Chinese-character printer for printing results.

The instrument testing process is rapid; the device performs the test automatically, completing the measurement of a single sequence parameter in one minute, thereby reducing the overall test duration. 20 Can be completed in minutes using traditional methods. 1 The day’s workload.

High measurement accuracy, with effortless suppression of power‑line frequency and spurious interference, enabling high‑precision measurement of weak signals.

■ Technical Indicators

Input power supply

Three-phase AC380V ± 10%

Maximum output voltage

AC300V Accuracy :1%

Maximum output current

5A

Output signal frequency

47.5 Hz/52.5 Hz; 50 Hz/50 Hz

Measurement range

Positive-sequence capacitance

Zero-sequence capacitance

Coupling capacitor

Positive-sequence impedance

Zero-sequence impedance

Mutual inductance reactance

Impedance angle

0.1-50 mu F

0.5-400Ω

0 ° ~360 °

Measurement resolution

0.01 mu F

0.01Ω

0.01

Measurement accuracy

0.2 mu F~1 mu F Time

± 3% ± 0.05 mu F

1 mu F~50 mu F Time

± 1.5% ± 0.03  mu F Time

0.5Ω~1Ω Time

± 3% ± 0.05Ω

01Ω~400Ω Time

± 3% ± 0.03Ω

± 0.2 ° ( Voltage >1.0V)

± 0.3 ° ( Voltage >0.2~1.0V)

External dimensions

620 mm x 500 mm x 600 mm ( With wheels ); Weight :79kg

Anti-interference parameters

Interference voltage : Longitudinal induced voltage after connecting to the instrument’s test power supply <350V;

Interference current : When the two ends of the line are short-circuited and grounded <40A;

Can be expressed as the ratio of the instrument’s output signal to the interference signal. 1:10 Stably and accurately complete the test under the specified conditions.

Instrument operating environment

Ambient temperature :-15 °C ~+40 °C Relative Humidity :<90%


Service system


Offering inspection and reception services

We guarantee to welcome your visit at any time and provide you with every possible convenience.

Provide a reasonable quotation.

We guarantee to provide a unified, reasonable quotation for the products you request within 24 hours.

Provide professional technical support

We guarantee that a technical specialist will respond to any technical questions you may have within 24 hours.

Provide detailed information

We guarantee that, within 24 hours, the product catalogues, software CDs, and other technical materials you require will be delivered to your company by our local branch or office.

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