The EKL-5 Temperature-Indicating Grounding and Short-Circuit Fault Indicator is an intelligent panel-type monitoring device that integrates the functions of fault location for grounding and short circuits, as well as wireless temperature measurement.
It is installed on the panels of distribution network switch cabinets (such as ring main units, switch stations), enabling the dual goals of rapid fault location and early warning of equipment overheating.
• Dual-core function integration: The fault indication (short circuit, grounding) and wireless temperature measurement functions are integrated in a single design, saving space and cost.
• Non-contact temperature measurement: By receiving data from wireless temperature sensors (installed at potential overheating points such as cable connectors), it provides secure isolation and flexible installation.
• Intelligent Diagnosis and Alarm: It has algorithms for preventing surge current malfunctions and can accurately identify faults. The temperature over-limit (warning/alarm) is indicated separately from the fault type, with a clear logic.
• Information integration display: The LCD screen or combined indicator lights simultaneously display information such as current, temperature, fault status, and communication status.
• Flexible Communication: Supports communication methods such as RS485, 4G/NB-IoT, and LoRa, facilitating integration into the distribution network automation system.
| Parameter Category | Typical Specifications |
|---|---|
| Rated Voltage | Suitable for 6/10/35kV distribution systems |
| Fault Detection | Short-Circuit: Current surge detection (e.g., ≥1.5 times rated current) Ground Fault: Transient method / zero-sequence current method (range: 0.5A–200A) |
| Temperature Measurement | Channels: 1 to 12 (configurable) Range: -40℃ to +150℃ Accuracy: ±1℃ to ±2℃ Wireless Range: ≤ 10m (within cabinet) |
| Display & Output | LCD screen / LED indicators, relay alarm output (dry contact) |
| Communication Interface | RS485 (Modbus), 4G / NB-IoT, LoRa, etc. (optional) |
| Power Supply | AC/DC 85V–265V, or battery-powered (low-power version) |
| Operating Environment | Temperature: -20℃ to +70℃, Humidity: ≤95% RH |
• Urban intelligent distribution network: Cable ring main units, switch stations, cable distribution boxes, enabling fault location and joint temperature monitoring.
• Highly reliable power supply area: Power distribution systems for data centers, hospitals, and airports, to prevent power outages caused by overheating.
• Power distribution room of industrial and mining enterprises: Monitors the temperatures of the connection points of busbars and cable heads inside the high-voltage switch cabinets to ensure production safety.
• New energy power stations: Monitoring of the high-voltage side of photovoltaic/wind power box transformers, addressing the issue of overheating at outdoor equipment connection points that makes inspection difficult.
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