DC System Ground Fault Tester With A High-Precision Detection Clamp
Table
PDF-3000A DC System Ground Fault Tester can be applied to dc
systems of any voltage level, equipped with a high-precision
detection clamp table, which greatly improves the detection range
and anti-interference ability through efficient processing of
multiple signals.
By using excellent algorithm and advanced fuzzy control calculation
theory, the advantages of the insulation branch detected are
expressed in numerical form, which fully reflects the advantages of
artificial intelligence. In addition, they have accurate judgment
of the location of the receiving site. Each test can indicate the
location and direction of the receiving site.
This instrument is used to find the exact location of dc system
connection of power plant and substation under the condition of
continuous electricity. Various types of ground fault, can quickly
find out the location, accuracy up to 100%.
Features
1. The use is simple: this instrument can be directly used only by
switching on the power switch, and no other key operation is
needed.
2. Safety and reliability: This instrument does not need to stop
floating charger and all other power supply, no impact on the DC
system.
3. Applicable voltage level: DC system 220V, 110V, 48V and 24V can
be used.
4. Wide range of application: any type of power plants,
substations, coal mines, chemical plants and other power supply
departments can be used.
5. Easy to carry: the receiver has its own battery, no external
power supply, you can carry anywhere to find the grounding point.
6. The DC system continuously searches for the grounding point
without affecting the normal operation of the system.
7. It has strong anti-interference ability and overcomes the
influence of distributed capacitance of the system.
8. Intelligent charging management, reduce charging time and
prolong battery life.
Technical Indicators
1. Signal Generator
1) Output signal frequency: 2.5Hz
2) Signal no-load output voltage: ±20V±5%
3) Signal voltage amplitude error: <5%
4) Signal short circuit output current: ≤80mA
5) Output port impact resistance: 400V DC shock
6) Power supply voltage: AC220V±10%
7) Voltage frequency: 50Hz ± 5%
8) Input insurance: 2A
9) Maximum power: 3W
10) Volume: 300mm × 270mm × 200mm
2. Signal Receiver
1) sensitivity of signal current detection: 0.5mA
2) signal generator impedance: 40 k Ω
3) maximum output current: 2.5ma
4) receiver display: number 0-19
5) volume: 210mm x 100mm x 32mm
6) A: jaw size: Φ 50 mm
7) B: jaw size Φ 7 mm x 9 mm
3. Machine
1) Detect the maximum grounding resistance: 300KΩ
2) Grounding resistance measurement accuracy: 0-4.5KΩ Error ≤
0.5KΩ;
4.5KΩ-300KΩ error ≤10%
