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GWOL-668 overhead line fault location

PRODUCT > Cable Fault Testing system > GWOL-668 overhead line fault location

GWOL-668 overhead line fault location

GWOL-668 overhead line fault location system used for 6-35kV overhead line grounding points accuracy pinpointing for the low resistance fault, high resistance, ARC grounding fault.
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1. Introduction:

GWOL-668 overhead line fault location system used for 6-35kV overhead line grounding points accuracy pinpointing for the low resistance fault, high resistance, ARC grounding fault.

With whole set, we offer complete solution method for the overhead line grounding fault. Includes function of :

l Line parameter measurement: to test the line parameters and give suggested testing method

l AC low resistance grounding fault location: to solve 70% -80% grounding fault with a more effect method of no need to climb the poles

l DC high resistance grounding fault location: to solve high resistance fault point pinpointing problem that other brands can’t do

l ARC grounding fault pinpointing: first time to solve such type fault pinpointing problem, such as fault from the insulator crack

l Space sector method: if small current grounding system, the system allow system run in two hours after fault, our device can do fault location when line running

l DC voltage withstanding function to check line status after maintain

 

 

The whole set includes transmitter, receiver, space magnetic filed sensor and accessories. The transmitter has built-in high capacity Lithium batteries.

 

2. Feather

 

l Used for grounding fault pinpointing of 6-35kV overhead line small current system.

l Whole function of Integrated fault diagnosis, AC location, DC location, AC voltage withstanding, DC voltage withstanding five functions.

l fault diagnosis:

ü Instructs appropriate positioning methods.

 

ü Line insulation resistance, capacitance measurement.

l AC pinpointing -direct connection ( low transition resistance grounding )

ü Transmitted signal: high power special low frequency AC signal active injection.

ü Receive signal: search along the section, without the need to hook up the sensor.

ü Efficient work: no need to climb the pole, greatly improve the test efficiency, reduce the work intensity.

l AC pinpointing -external booster output ( There is grounding PT, medium transition resistance grounding)

ü Transmitted signal: high power special low frequency AC signal active injection.

ü Receive signal: along the section search, need to mount the rod to connect the sensor.

ü No need to remove the line grounding PT.

 

l Innovative resistance current content and current amplitude ratio, to solve a wider range of faultsDC pinpointing ( line stop running ,with high /low transition resistance grounding and ARC grounding)

ü Transmitted signal: active injection of high-power pulsating DC signal.

ü Receive signal: along the section search, need to mount the rod to connect the sensor.

ü All-around positioning mode, especially to solve the problem of arc grounding positioning.

l The transmitter has automatic discharge stop function to ensure safe operation.

l The transmitter has over current protection and over temperature protection functions.

l Large capacity lithium-ion battery pack is built in the transmitter, easy to carry.

l Receiver sampling is fully digitized with high sensitivity signal processing, and the criterion is clear and intuitive.

l With data memory function, no loss of power off, more convenient to pinpoint.

l Using temperature -10℃-50℃,humidity <80%RH, elevation<1000m


3. Tech. Specification

 

l Transmitter:

 

Work mode

fault diagnosis, AC location, DC location, AC voltage withstanding, DC voltage withstanding five functions

 

Parameter measurement

Resistance

Range : 600 0MΩ, Accuracy ±10%

Capacitance

Range max. 10uF,accuracy ±20%

 

 

 

AC pinpointing

Output frequency

Special frequency 20Hz

Output method

Power limitation constant current output

Output current

Max 200mA,external booster output 33mA

Output voltage

DC output :peak 560V,External booster:peak 3.4kV

 

 

DC

pinpointing

Output frequency

Impulse 1Hz

Output method

Power limitation constant current output

Output current

Max 70mA

Output voltage

Max DC8kV

 

AC voltage withstanding

Output current

Max. 33mA

Output voltage

External booster output: peak 5kV

Max.power

100W


 

 

 

DC voltage withstanding

Output current

Max. 70mA

Output voltage

Max DC8kV

Max.power

400W

 

Protection

Overheat protection, over current protection, under voltage shutdown, automatic discharge Automatic shutdown without operation for 2

hours.

Display

800×480 high bright color LCD

Power

Built in 480WH Li-ion battery group

Charging

Input AC220V 50~60Hz;,Output 54.6V,2A

Vol.

450mm×240mm×270mm

Weight.

13kg

 

 

 

  • Receiver and hanging sensor

 

Work mode

AC pinpointing, DC pinpointing

Memory

Data remembering function for all modes

Communication between sensor and receiver

2.4GHz,  >100m

Display

800×480 high bright color LCD

 

Power

Built in Li-ion battery group, standard 3.7V, 6700mAH Hanging sensor recharging Li-ion battery 3.7V,1500mAH

Charging

Input AC100-240 V, 50~60Hz;

Output 5V/2A

Vol.

Receiver 226mm×120mm×55mm Hanging sensor: 185mmx140mmx50mm

Weight.

Receiver 0.9 kg Hanging sensor 0.5kg


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