Power Frequency Line Parameter Test System For HV Power Transmission Line

High Voltage Testing Equipment 1200:1 800V Transmission Line Parameter Test System

Features

1. System anti-interference performance more than 1200 times(actual test)

2. Resist 10kv-50kv static induced voltage and 20-200A interference current without interference

suppression device

3. Remote optical fiber operation, operator and hv is isolated completely.

4. Equipped with remote grounding protection device, which can be grounded or disconnected

remotely by one key. It greatly improves the safety of field operators and reduces the risk of arc

and electric shock.

5. With the function of calculating the distribution model of line parameters, the results can be

calculated on site.

6. Can accurately measure the magnitude and phase of current even 0.1mA, and ensure the accurate

measurement of zero sequence capacitance and other items.

7. It can output not only large current (50A or larger, short circuit, cable), but also high voltage

(750V or larger, positive sequence capacitance, etc.) to ensure the trustworthiness of measurement results.

8. Fully automatic measuring range, 7 Inch Touch screen, easy to operate.

9. Memory card and printer , save data and upload into pc.

HV power frequency parameter test system of power transmission is high accuracy measurement system.

It work normally under the condition of interference and test signal ratio: 1200:1.

System include:three phase variable frequency power source, isolated transformer, line parameter tester,

remote earthing protection controller,Interference suppression device and DC-Resistance Tester for

Transmission lines.System could test power frequency parameter of HV power transmission line precisely,

rapidly, reliably: positive sequence impedance,positive sequence resistance,positive sequence reactance,

zero sequence impedance, zero sequence resistance, zero sequence reactance, positive capacitance,

zero sequence capacitance,capacitive coupling , coupling capacity between adjacent lines, interaction

inductive reactance.

Technical parameter

Each part technical parameter

DF7300 variable frequency power supply

Output power :30kW

Input power supply:AC380V/220V±10%,50hz；

Output mode:Three phase or single phase ；

Output frequency:20～300Hz step-in 0.1hz ；

Frequency stability :more than 0.02Hz；

Have over-voltage, over-current and overheat protection function

Work normally with strong interference condition.

Touch screen,easy to operate.

Optical fiber remote control unit with built-in battery completely eliminate the possibility of high-voltage

induction electric casualties

DF7005 isolated transformer

Output mode:Three phase four line

Output frequency :20～300Hz；

Max.output voltage:800V ；

Max.output current:50A

With ammeter,could read current of each phase in time

Strong anti-interference performance.

DF7000- line parameter tester

When the amplitude of interference and selected heterofrequency signal is 1200:1,

it can still be measured accurately.

Voltage range:1～800v,automatic shifting control

Current range:0～50A automatic shifting control

Measurement frequency range:40～70Hz Step-in:1Hz ；

Measurement channel:3 voltage,3 current phase resolution:0.01°；

Voltage resolution:0.01mV voltage measurement accuracy :±(0.5%+0.01v)

Current resolution:0.001A current measurement accuracy:±(0.5%+0.01a)

DF7009 Remote earthing protection controller

Specially designed remote control grounding protection device, through small remote controller, one

key remote control test line grounding or disconnection grounding, without manual operation of knife

and gate, greatly improves the personal safety factor of operators.

DF7016 Interference suppression device( current-limiting resistance)

Enlarge to test loop resistance and reduce interference current.

DF7008 DC-Resistance Tester for Transmission lines

Used to test dc resistance in heavy interference transmission line, even with high induced voltage and current.

In-built anti-interference test technology and test accurately at strong interference condition.

Complete protection function and ensure worker and device safety.

Four terminal method test to eliminate lead effect.

In-built battery,it could meet 10 times test continuously at full battery.

Max.test current:10A

Test range:5mΩ～200Ω；

Test precision:

At 5mΩ～200mΩ,±1.0% reading ±0.2mω；

At 200mω～200Ω,±0.5% reading ±0.2mω