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
| Power supply | AC380V/220V Automatic adaptation,50hz/60Hz |
| Max. output voltage | 800V selectable |
| Max.output current | 100A |
| Measurement range and accuracy |
| Voltage | 1～800v,±(0.5%+0.01V) |
| Current | 0.01mA～50A,±(0.5%+0.2mA) |
| Phase angle | -180°～+180°,±0.2° |
| Antistatic induced voltage | 0～50kV |
| Anti induction current | 0～100A |
| Ambient temperature | -20︒C-+55︒C Humidity:≤90% No condensation |
| Automatically calculate impedance,resistance, reactance,capacity,
inductance etc |
| Correct test result as per line parameter distribution |
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
