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[China]
Trade Verify
Address: No.1 Fenghuangyuan Second Road, Jiangxia District, Wuhan City, Hubei Province, China
Contact name:Emma
Wuhan GDZX Power Equipment Co., Ltd |
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DC System Earth Ground Fault Detection Tester Digital Pressure Calibrator
Product Introduction :
The PDF-3000A DC system ground fault tester is used to find the
accurate location of the DC system grounding point in power plants
and substations under uninterrupted power conditions. In principle,
the instrument introduces a brand-new detection method—waveform
analysis. Its main features and advantages: high detection
sensitivity, strong ability to check the distributed capacitance of
the system, uninterrupted power search, does not affect the normal
operation of the system, and anti-interference ability Strong, safe
and reliable, etc.
The waveform analysis method is to add a specific periodic voltage
signal between the DC bus and the ground, detect the current of
each branch through a caliper probe, analyze and calculate the
phase and phase difference between the fundamental wave and the
harmonic of the current signal, and then Determine whether there
are ground faults and ground fault points.
This device is composed of three parts: signal generator, signal
receiver and signal collector (caliper). When looking for faults in
the DC system, the three must be used together.
Technical indicators:
A. Signal generator
1. Output signal frequency: 2.5Hz
2. No-load signal output voltage: ±20V±5%
3. Signal voltage amplitude error: <5%
4. Signal short-circuit output current: ≤80mA
5. Impact resistance of the output port: 400V DC impact
6. Power supply voltage: AC220V±10%
7. Voltage frequency: 50Hz±5%
8. Input insurance: 200mA
9. Power: 3W
10. Volume: 300mm×270mm×200mm
B.Signal receiver
1. Signal current detection sensitivity: 0.5mA
2. Signal generator impedance: 40KW
3. Output current: 2.5 mA
4. Receiver display: numbers 0-19
5. Volume: 210mm×100mm×32mm
6. A jaw size: Φ50mm
7. B jaw size: Φ7mm×9mm
C. Machine parameters
1. Detection of grounding resistance: 300KΩ
2. Detection capacitance: 20μF
3. Grounding resistance measurement accuracy: 0-4.5KΩ, error ≤0.5KΩ
4. Grounding capacitance detection range: 3-60uF
5. Grounding capacitance measurement accuracy: 3-10uF error ≤1uF
For more information , click this link to send us inquiry now !
Wuhan GDZX Power Equipment Co.,ltd is the supplier of the State
Grid in China.It means we are the supplier of the Chinese
Government.And our products spread throughout the whole China.
What's more, our customers come from different countries like
America, England, Peru , Malysia, Vietnam ,Singapore and so
on.
Our main products are High voltage tester , Cable Fault Locator, Power Quality Analyzer, Standard Power
source , Testing Transformer and so on.
Packaging & Delivery
1. Delivery within 8-15 work days
2. After-sale service:. Any questions or problems after receiving
the product, please feel free to contact us. Problems would be
solved for you immediately.
3. Experienced and professional logistic agent .
