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The HOP-CTPT Wireless Passive Current and Temperature Sensor is a versatile, low-voltage (600V system) monitoring solution designed for real-time electrical fire safety and operational monitoring. It operates without external power, utilizing either the cable's magnetic field or an internal battery for power. This sensor enables remote monitoring of cable status, current, and temperature, transmitting data wirelessly to a receiving device. Key advantages include simplified installation, elimination of wiring errors, and enhanced safety in hazardous environments, making it ideal for applications in electrical fire prevention, safety monitoring, environmental online monitoring, and overcurrent protection.
Product Attributes
Brand: HOP-CTPT
Antenna Type: Suction cup antenna (default), Rod antenna (optional, specify when ordering)
Installation Method: Snap-on
Power Source: Industrial frequency magnetic field or internal lithium battery (automatic switching)
Certifications: Not specified
Origin: Not specified
Material: Not specified
Color: Not specified
Technical Specifications
Specification
Details
Product Name
Wireless Passive Current and Temperature Sensor (with battery)
Available Apertures
16mm, 22mm, 36mm
Revision History
V1.0 (2021.1.5 - Initial Release), V1.1 (2023.1.29 - Added product weight, cable vibration as optional), V1.2 (2024.12.19 - Antenna type changed to default suction cup)
16mm TYT (Square): Rated Current 63A, Max Current 100A, Measurement Range 0-100Aac
16mm FJ (Round): Rated Current 100A, Max Current 150A, Measurement Range 0-150Aac
36mm FJ (Round): Rated Current 400A, Max Current 630A, Measurement Range 0-630Aac
Temperature Sensor Accuracy
2
Temperature Sensor Range
-40 to +120
Wireless Working Frequency
433MHz
Wireless Power
14dbm
Communication Transmission Period
Industrial frequency magnetic field: 20s, Battery: 3min (Configurable, min 15s for magnetic field). Note: At minimum start current, period may switch between set period and 180s.
Transmission Distance
Up to 200 meters in open space
Withstand Voltage
4000Vac/60s (between input and antenna base)
Insulation Resistance
100M/500V
Operating Environment
Indoor use, Operating Temp: -30 to +70, Storage Temp: 0 to +40, Relative Humidity: 5%-95% (non-condensing), Altitude: 2000m
Product Weight
16mm aperture square: 86g
16mm aperture round: 180g
36mm aperture round: Not specified
Optional Features
Anti-opening function, Cable vibration status, Harmonic current measurement (up to 15th harmonic)
Communication Protocol
Modbus (with master station)
Battery Life
Up to 2.5 years (requires replacement)
Installation Precautions
Only install on insulated cables, not bare wires or copper bars.
Verify cable temperature does not exceed 70C to prevent equipment damage due to aging or overload.
Ensure cables are not loose or have poor contact before installation.
Installation should only be performed by qualified personnel to prevent electric shock.
Install in a dry, clean location away from heat sources and strong electromagnetic fields, avoiding direct sunlight.
Consider ease of maintenance when selecting the installation location, typically within switch cabinets to protect from oil, dust, and corrosive gases.
Select the appropriate sensor model based on the cable size for snap-on installation.
Usage and Operation
Install the sensor on the cable at the monitoring point, ensuring the temperature sensor is in close contact with the cable.
Close the sensor securely.
The sensor enters normal operation when the circuit current exceeds the product's starting current, collecting and transmitting temperature, current, and other data wirelessly.
If the line is unloaded or the current is below the starting current, the sensor uses its internal battery to maintain operation.
The indicator light flashes once during wireless communication.
Data is uploaded via 433MHz wireless communication. Upload frequency is approximately every 180 seconds when powered by battery, and every 20 seconds when powered by the current transformer (configurable, minimum 10s).
Main uploaded data includes: Temperature, Current magnitude, Live status, Cable vibration status (optional).
Refer to the master station equipment's protocol for specific wireless communication data content and format.
Maintenance and Troubleshooting
Indicator light not flashing after power-on: Low battery or waiting period (180s for battery power only). Check battery, wait if necessary.
Indicator light not flashing after reaching starting current: Measured current is below starting current. Ensure measured current exceeds the starting current.
Inaccurate data or 0 display: Temperature measurement issues (check electrode contact, ensure measurement is within range). Current measurement issues (check CT clamp tightness, ensure current is within measurement range).
Incorrect live status: Live detection electrode is too far from the cable. Check cable for power and electrode contact.
Slave station cannot communicate with concentrator: No grouping or communication link affected. Check grouping, metal shielding, antenna, distance, and obstacles.
Quality Assurance
The company provides free repair for non-human induced damages within 12 months of operation or 18 months of receipt. Damages due to improper installation, use, storage, exceeding operating conditions, human damage, or self-repair are not covered. Warranty period is limited to the specified free warranty years.
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture.
Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture.
Founded in 2009, Our compa...
