This product is capable of being applied to any voltage level of DC systems, equipped with high-precision detection clamp meters. By efficiently processing multiple signals, it significantly enhances the detection range and anti-interference capability. Utilizing excellent algorithms and advanced fuzzy control computation theory, the instrument represents the superiority degree of the detected insulation branches in numerical form, fully demonstrating the advantages of artificial intelligence. For pinpointing the location of grounding points, it offers highly accurate judgment, indicating both the location and direction of grounding points during each detection.

The device prioritizes system safety, adhering to the highest industry standards by employing reliable low-frequency signal methods for detection. It has undergone extensive practical applications on-site, ensuring no impact on the system.

In power plants and substations, the DC system provides power for control, protection, signaling, and automatic devices. The continuous and safe operation of the DC system is crucial for ensuring power generation and supply. Since the DC system operates as an ungrounded floating system, a two-point ground fault can lead to malfunctions or failures of the aforementioned equipment, potentially causing major accidents. Therefore, when a single point ground fault occurs, it is essential to accurately and swiftly detect the grounding point while maintaining normal DC system power supply, thereby preventing potential hazards from two-point grounding.

This instrument is used to accurately locate grounding points in the DC systems of power plants and substations without interrupting power supply. It can quickly identify various types of grounding faults, achieving an accuracy rate of 100%.

1. Ease of Use: This instrument can be used immediately by simply turning on the power switch, requiring no additional button operations.

2. Safety and Reliability: The instrument does not require shutting down the floating charger or any other power sources, ensuring there is no impact on the DC system.

3. Multiple Voltage Levels: Suitable for various DC system voltages including 220V, 110V, 48V, and 24V.

4. Wide Applicability: Can be used in any type of power plant, substation, coal mine, chemical plant, and other power supply departments.

5. Portability: The signal receiver is equipped with its own battery and does not require an external power source, allowing it to be carried anywhere to locate grounding points.

6. Non-stop DC System Testing: Grounding points can be located without interrupting the DC system, ensuring normal system operation is not affected.

7. Strong Anti-interference Capability: Overcomes the influence of system distributed capacitance, providing reliable performance.

8. Intelligent Charging Management: Features intelligent charging management to reduce charging time and extend battery life.

1. Signal Generator

• Output Signal Frequency: 2.5Hz
• Signal Output Voltage (No Load): ±20V ±5%
• Signal Voltage Amplitude Error: <5%
• Signal Short Circuit Output Current: ≤80mA
• Output Port Surge Protection: Withstands 400V DC surge
• Power Supply Voltage: AC220V ±10%
• Voltage Frequency: 50Hz ±5%
• Input Fuse: 200mA
• Maximum Power Consumption: 3W
• Dimensions: 300mm × 270mm × 200mm

2. Signal Receiver

• Signal Current Detection Sensitivity: 0.5mA
• Signal Generator Impedance: 40KΩ
• Maximum Output Current: 2.5mA
• Receiver Display: Digital display 0-19
• Dimensions: 210mm × 100mm × 32mm
• Clamp A Size: Φ50mm
• Clamp B Size: Φ7mm × 9mm

3. Complete System

• Maximum Detectable Ground Resistance: 300KΩ
• Ground Resistance Measurement Accuracy:
  • 0-4.5KΩ: Error ≤0.5KΩ
  • 4.5KΩ-300KΩ: Error ≤10%