Visão Geral do Produto
Dispositivo de Medição de Temperatura Sem Fio Série refere-se a uma família de produtos projetados para monitorar a temperatura em vários pontos sem a necessidade de fiação física entre o sensor e a unidade de coleta ou exibição de dados. Esses sistemas são cruciais para o monitoramento de equipamentos elétricos, processos industriais e condições ambientais onde soluções com fio tradicionais são impraticáveis, inseguras ou muito caras.
Resumo do Produto
Short-circuit Alarm Indication: The short-circuit sensor detects the line current during operation and sends an alarm signal when a short-circuit fault occurs on the line and meets the short-circuit judgment criteria.
Grounding Alarm Indication: The grounding sensor detects the zero-sequence current of the line during operation and sends an alarm signal when a grounding fault occurs on the line and the grounding fault current exceeds the set alarm current value.
Over-temperature Alarm Indication: The temperature sensor detects the temperature of the cable near the cable head during operation and transmits the data to the host via optical fiber in a very short time. When the cable temperature reaches or exceeds the set alarm temperature value, the host sends an alarm signal and closes the contact.
The 2-in-1 sensor for temperature and current display monitors the temperature and current of the monitoring point during operation, and transmits the data to the host via optical fiber at a certain frequency. After receiving the signal, the host displays the data on the LCD screen (Realize page-up and page-down to check the current and temperature of each phase via operation and key pressing). (Current display is an optional function.)
Two-remote Communication: After the indicator generates short-circuit and grounding alarm signals, it can output and transmit the fault status remotely via RS485 communication cable; in the fault-free state, the line load current and the temperature of the monitoring point are regularly reported to the upper computer via RS485 cable. (Optional function.)
Parâmetros Técnicos
| Item | Parâmetro |
|---|---|
| Short-circuit Alarm | 50~1000A (factory configurable), tolerance ±5%; factory setting: 600A |
| Short-circuit Overcurrent Response Time | 0.03~5S (factory configurable); factory setting: 0.2S |
| Grounding Alarm | 10~100A (factory configurable), tolerance ±10%; factory setting: 20A |
| Grounding Overcurrent Response Time | 0.03~5S (factory configurable); factory setting: 0.2S |
| Over-temperature Alarm | 20~80°C (field configurable), tolerance ±1°C; factory setting: 80°C |
| Auto-reset Time | 7S~48h (factory configurable); factory setting: 8h |
| Standby Current of the Whole Unit | ≤ 5μA |
| Indicator Protection Class | Host IP40; Sensor IP65 |
| Short-circuit & Grounding Protection Contact Capacity | 230V/AC-0.1A, 30V/DC-1A |
| Over-temperature Trip Contact Capacity | 230V/AC-0.1A, 30V/DC-1A |
| Over-temperature Alarm | Relay output for 3 cycles (2S per cycle, set 750mS, reset 1250mS) |
| Maximum Withstand Current of Short-circuit Current Sensor | 31.5kA/4S |
| Ambiente Operacional | -25°C ~ +75°C; relative humidity: ≤ 95%; waterproof, acid-proof, salt-fog resistant |
| Escopo da Aplicação | In systems with voltage level below 20kV |