HZ-501A Underground Electrical Power Cable Fault Locator

HZ-501A Underground Power Cable Fault Locator Price

Sitou pou coexist ak ba rezistans ou gwo fòt rezistans

Fòt rezistans ki ba: si domaj la izolasyon nan kab la, ka dirèkteman sèvi ak metòd la tès nan batman vòltaj ki ba nan yon faz klas oswa faz nan fay latè, ki rele flit la nan fay rezistans ki ba, fay rezistans ki ba. Valè rezistans jeneral la se mwens pase yon santèn ohm. Si valè rezistans a se zewo, yo rele sa kout fay, ki se yon ka espesyal nan fay rezistans ki ba

Leakage of high impedance fault: if the cable insulating medium has been damaged and fixed channel resistance, but the fault cannot be directly used cable fault tester by "low pressure pulse measurement method" called leakage of high fault resistance, the resistance is usually in the hundreds of ohms or more. When the DC leakage voltage test is done on the spot, the leakage current value increases continuously with the increase of the DC voltage, and exceeds the standard value of the cable itself. Leakage of high resistance and low resistance fault are relatively described and there is no distinctive difference between them.

Flashover nan fay rezistans segondè: Flashover nan fòt rezistans segondè nan ranje vòltaj pre tès kab la, lè vòltaj la pre tès kab aplike nan yon sèten valè, valè aktyèl la flit nan kab toudenkou ogmante, ki depase valè a nan sijè yo. obligatwa kab valè estanda, sa a ki kalite echèk yo rele flashover nan fòt rezistans segondè. Malgre ke izolasyon kab la domaje, li pa te fòme yon kanal rezistans fiks.

Metòd diskriminasyon nan karakteristik fòt nan kab pouvwa

Twa nan karakteristik fay nan kab pouvwa:

(1) Judged by MΩmeter, multi meter.

(2) Jije pa kab rezilta tès pre-

(3) Jije pa HZ-501A kab kouran elektrik pre-lokatè

Anba sikonstans nòmal, rezistans ba, fay sikwi louvri ka dirèkteman jije pa mèt Ohm la oswa HZ-501A pouvwa kab flashover enstriman enpilsyon tès vag.

Pwogram tès defo kab pouvwa.

Lè w aplike enstriman flashover HZ-501A pou lokalize fay kab la, pwosedi sa yo jeneralman obligatwa:

(1) Analize karakteristik fay kab yo epi aprann sou vòltaj nominal kab la ak materyèl izolasyon yo.

(2) Using the HZ-501A Power cable Flashover instrument's impulse method to detect the cable length, and also to calibrate the radio wave speed in the fault cable.

(3) Lè w chwazi metòd tès apwopriye a, w ap aplike HZ-501A Power cable flashover enstriman an pou pre-lokalize fay kab la.

(4) Pou pin pwen fòt kab pouvwa a jisteman, enkli wout kab anba tè a, pwofondè ak lokalize pwen fay la.

(5) Aplike metòd analiz tolerans yo nan rezilta tès fay kab yo (mezire tolerans, transfere tolerans vitès, tolerans jijman, tolerans enstriman).

Endèks spesifikasyon prensipal sistèm lan

1) Platfòm operasyon yon sèl chip la, manyen -metòd operasyonèl ekran an:

2）System functions: Fault distance measurement,Fault locating,transmission speed test,fault resistance,Power cable route tracing,buried depth detection etc

3）Detecting method: Low voltage impulse,Flash over method,Audio frequency method,Acoustic magnetic synchronous method,Valley value method,Peak method,Electromagnetic induction etc.

4）Display control: Flashover instrument: 8inchesindustrialgrade LCD, Battery inside, can workfor6 hours continually; others are Pointer table display

5）Detection range: testing distance: 30km, detection depth: 2-5m

6）Measurement accuracy: Pre-testing tolerances: ±10m (absolute value) or 1 percent (relative value), Precisely detecting tolerances: ±0.2m (Locating,route,depth)

7）sampling frequencies: 80MHz,40MHz,20MHz,10MHz

8）sampling method: automatic continuous sampling, no any discharging wave form can be left out absolutely.

9）low voltage impulse: 0.05/0.1/0.2/0.5/1/2/8uS, seven

10）Output power: Route power: 100W,Impact power: 0-400W

11）Impact high voltage: 0-35kV

12）short circuit current: 0-320mA

13）Burn through power: 0-1225J

Remak

A During testing if it occurs abnormal, press the "stop" button or turn off the power switch to ensure safety.

B Kèlkeswa tès, kab tès la dwe konplètman egzeyate anvan yo retire kab vòltaj segondè a.

Pwoblèm komen ak solisyon

1. Pa gen repons apre kòmanse:

l Tcheke AC 220V ekipman pou pouvwa a;

l Tcheke si fuse a bon

2. Bòt vòltaj la pa nòmal

l Tcheke fil tè a, fil tè vòltaj segondè bon epi si bouton ajisteman vòltaj la dekole;

3. High voltage can't be started.

l Check if "Adjust Voltage" knob at zero;

4. Bouton Stop pa gen okenn repons

l Peze bouton an sispann pou 2 a 7 segonn, oswa lè peze bouton an sispann, rale levye a kòmanse.

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