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Wireless temperature measurement device with built-in plug in the ring main unit
It can receive, upload, manage, and forward data from temperature sensors within its range, facilitating on-site inspections and identifying potential
Product details
Product Introduction
At present, there is no effective and accurate method or related technology for temperature warning of T-shaped cable connectors inside the ring main unit. This is mainly due to the fully enclosed, high-temperature resistant, and insulated characteristics of the cable T-shaped connector, and traditional contact temperature measurement cannot effectively measure accurate temperature. Our company has independently developed a passive wireless temperature rise monitoring device based on the principle of electric field space power extraction, which is mainly used for temperature rise monitoring of cable T-joints in ring main units. This device consists of a passive wireless temperature sensor and a wireless temperature concentrator. The temperature sensor is built into the insulation plug of the ring main unit accessory and is directly connected to the hot spot.
Wireless temperature concentrator
product overview
It can receive, upload, manage, and forward data from temperature sensors within its range, facilitating on-site inspections and identifying potential safety hazards. According to the temperature measurement requirements, embedded installation can be carried out on each switchgear, distribution cabinet, cable junction box and other equipment, and RS485 short distance communication and NB-IoT.4G long-distance wireless communication can be used. A single host can control 3-256 points.
Installation method
Installation method: Embedded installation, hole size 76mm x 76mm.
Wiring diagram
Technical Parameter
| name | Technical Parameter |
| monitor: | 3, 6, 9, 12... Temperature measurement points, temperature measurement points can be set |
| Display mode: | LCD color screen |
| Alarm output: | 1 (normally open contact, 220V/5A) |
| Switch input: | 2 routes |
| Communication method: | RS485, ModBus protocol |
| Working power supply: | AC/DC85 -265V |
| Whole machine power consumption: | <5W |
| Data upload: |
RS485， NB-loT. 4G |
Built in wireless temperature sensor
Built in cable head - integrated design, suitable for European and American cable joints. Compared to traditional external and internal temperature sensors, this product directly monitors the temperature inside the cable plug. It uses electric field space energy supply and Zigbee wireless data transmission technology, which can directly replace the original plug without adding any additional components except for the host, truly achieving installation free, debugging free, and maintenance free.
Technical Parameter
| name | Technical Parameter |
| Temperature measurement range: | -25℃-125℃ |
| Temperature measurement accuracy: | ±1℃ |
| resolving power: | 0.1℃ |
| Power supply method: | Electric field charging (no battery required) |
| High voltage impact: | 10 times for each positive and negative of 95KV |
| Voltage resistance: | 45KV/3min， normal |
| Partial release: | 15KV， Less than 10PC |
| RF standard: |
zigbee2.4G |
| Launch distance: | 100M (in open environment) |
Remarks: Provide integrated supporting accessories (some cooperative manufacturers: Wuhan Kerui, Andipu, Yangzhou Senyuan...)
installation diagram
Application scenarios
Used for temperature acquisition and monitoring of high-voltage power equipment with cable plugs for various applications such as ring main units, cable distribution boxes, and box type substations.
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