Transformer/busbar/connector contact/motor wireless temperature measurement Say goodbye to passive repairs, 24-hour online temperature measurement, and install "thermometers" on your electrical equipment!

15 04, 2026

The Importance of Temperature Monitoring for Electrical Equipment

Electricity is the lifeline of industrial production, commercial operation, and livelihood security, and equipment temperature is the "barometer" of electrical safety. High and low voltage switchgear, transformers, busbars, and cable joints are prone to local overheating due to poor contact, insulation aging, and overload during long-term high load operation. If not monitored in a timely manner, it can cause equipment damage, production interruption, or even electrical fires, with serious consequences that are unimaginable.

As long as various electrical equipment is connected to the power system, it will generate a certain amount of heat through a certain current, and the temperature will rise. In the power system, many major accidents are caused by the intensification of electrical equipment overheating. If the hidden danger of electrical equipment overheating can be detected in a timely manner, maintenance or repair measures can be taken in a timely manner, and the fault hidden dangers can be eliminated, the operation accidents of the power supply system can be greatly reduced, and the reliability of power supply can be improved. Therefore, it is very important to timely detect and correctly analyze the overheated parts of electrical equipment.

Traditional temperature measurement methods can no longer keep up with modern electricity safety requirements

① The temperature test wax sheet cannot be monitored in real time, which poses a significant risk of aging and failure.
② Infrared temperature measurement has blind spots, which cannot be detected or relied upon inside the enclosed cabinet.
③ The wired temperature measurement wiring is complex, with high insulation risks, difficulty in renovation, and high maintenance costs.
④ The passive repair and post-remediation mode cannot prevent the hidden risk of overheating.

Acrel wireless temperature measurement software and hardware complete solution

Acrel's all-scenario wireless temperature measurement integrated solution, with "passive wireless, precise sensing, intelligent warning, and convenient operation and maintenance" as its core, completely breaks the bottleneck of traditional temperature measurement and achieves a leap from "passive repair" to "active prevention and control" in power safety.

We have Acrel wireless temperature measurement solutions that include sensors, transceivers, display devices, and integrated system platforms!

What are the application scenarios for wireless temperature measurement? Where is it used?

Temperature measurement requirements - High voltage switchgear

For example: temperature measurement of cable joints, contact points, and busbars.

Cable joint temperature measurement
Contact temperature measurement
Mother busbar temperature measurement

Temperature measurement requirements - Low voltage cabinet

For example, temperature measurement for frame circuit breaker connectors/busbars, capacitor/reactance surfaces, drawer cabinet cable connectors, and low-voltage outgoing cable connectors.

·Frame circuit breaker connector/busbar temperature measurement

· ATE400

· Capacitor/reactance surface measurement box

· ATE300M

· Drawer cabinet cable connector temperature measurement

· ATE400

· Low-voltage outgoing cable connector temperature measurement

· ACE100

Temperature measurement requirements - Transformer temperature measurement

For example, temperature measurement of transformer joints and internal windings.

· Transformer joint temperature measurement

· ATE400

· Temperature measurement of the internal winding of the transformer

· (Pre-embedded PT100) ARTM-8L

Temperature measurement requirements - distribution box, indoor cable, cabinet/indoor, etc

For example, temperature measurement of distribution boxes, indoor cable trenches, and indoor temperature and humidity of switchgear/distribution rooms.

Temperature measurement requirements - motor temperature measurement

For example: temperature measurement on the surface of the motor, temperature measurement on the motor junction box, and temperature measurement on the internal winding of the motor.

Industry customer temperature measurement needs - Data center

For example: temperature measurement of indoor cable tray/bus duct enclosures, temperature measurement of data center servers, and temperature measurement of data center column cabinet joints.

Industry customer temperature measurement demand - energy storage container

For example, temperature measurement is required for the DC busbar of an energy storage container

PT100 model: MPT101B130006

Voltage resistance: AC3000V/DC 4300V

DC busbar for energy storage container

Acrel Wireless Temperature Measurement Product Qualification Certificate

Four core advantages define a new standard for power temperature measurement

1. Passive wireless maintenance free, eliminating security risks from the root

The ATE800 series RFID passive sensor adopts radio frequency energy harvesting technology, which does not require batteries or wiring, and is maintenance free for life, completely avoiding the risks of battery failure and high-voltage wiring insulation in high temperature environments. ATE400 sensor induction power sensor, can be started when it is ≥ 5A, with a long service life and stable online operation in high load scenarios, greatly reducing operation and maintenance costs.

2. High precision sensing, able to accurately capture temperature rise of 0.5 ℃

Using high-precision temperature measurement chips with an accuracy of ± 1 ℃ and a temperature measurement range of -50 ℃~+125 ℃, it can sensitively capture small temperature rise changes, warn in advance of increased contact resistance and potential overheating faults, and nip hidden dangers in the bud stage. Data remains stable in strong interference environments, making it safe to use in high-voltage cabinets and dense bus scenarios.

3. Installation with zero modification, both new and old projects can be quickly implemented

There are various installation forms such as strap type, bolt type, and patch type, which do not require dismantling or disconnecting the equipment. The receiver supports rail installation, 13774430992 antenna flexible selection, stable signal for complex cabinets, quick deployment for new projects, and one click upgrade for old distribution rooms.

4. Full chain intelligent control, local and remote "dual insurance"
From single cabinet monitoring to centralized control, Ankerui has built a complete product matrix:

ARTM Pn display device: supports 60 sensors per unit, suitable for small and medium-sized distribution rooms;

ATC wireless temperature measurement transceiver: supports centralized access to 240 sensor positions;

ARTM8 Inspection Instrument: Customized for multi-channel temperature measurement of transformers and reactors.

Wireless temperature measurement and inspection instrument with 8/24 channels

Display terminal

ARTM-Pn
Working power supply: AC85~265V, DC100~300V adaptive, power consumption 8W
Installation method: Embedded installation, opening 92 * 92, depth 65
Communication interface: 1 RS485 serial communication interface, Modbus RTU communication protocol
Contact temperature measurement: can connect to 60 ATE400
Contact temperature measurement accuracy: ± 1 ² C
Input acquisition: 4-channel built-in 12V input, capable of collecting the position status of circuit breakers, handcarts, etc
Output configuration: 2-channel passive output, with high temperature/over temperature/phase temperature difference/temperature sudden change alarm function
Electrical parameter measurement: current, voltage, frequency, active power, reactive power, kWh, etc., level 0.5

ASD320/300/500
Working power supply: AC/DC 220V, AC/DC110V adaptive
Status input requirement: Passive dry contact input (internal power supply of status display device)
Temperature and humidity measurement and control accuracy: temperature<1 ° C; relative humidity<3%
Wireless temperature measurement: can be used with ATE400 wireless temperature sensor, temperature measurement range -50 ℃~125 ℃ C
Heating and alarm output capacity: AC220V/5A
Live display requirement: The short-circuit current of the secondary side of the live sensor to ground under rated voltage should be greater than 200uA
10kV system, sensor capacity>100pF;
35kV system, sensor capacity>35pF;
6kV system, sensor capacity>180pE
Communication: RS485 serial communication interface, Modbus RTU protocol (ASD500 with large network port)
Dimensions: 238mm * 178mm * 83mm (width * height * depth)

ATP007/ATP010
Working power supply: DC24V
Installation method: Embedded installation
Communication interface: Standard configuration includes 1 RS485 serial communication interface (Modbus RTU protocol)
                                           1 Ethernet port
Contact temperature measurement accuracy: ± 1 ° C
High temperature alarm: The device's white belt buzzer will activate when the temperature exceeds the set value

Active wireless temperature sensor

CT-powered wireless temperature sensor

The Acrel-2000T wireless temperature monitoring system platform, as a "smart brain", achieves 24-hour real-time monitoring, multi-level warning (APP+SMS+voice+pop-ups), historical data tracing, and closed-loop inspection management. It can grasp the temperature status of the entire station without leaving home, greatly improving operation and maintenance efficiency.

Full scene coverage, safeguarding enterprise electricity safety

Ankerui's wireless temperature measurement solution has been widely used in:

√Chemical/Steel/Manufacturing Plant Area

√Data center, logistics center

√Cold Chain Park

√New construction and renovation of substations and distribution rooms

√Airports, hospitals, commercial buildings, transportation hubs

√High voltage cabinets, busbars, cable connectors, circuit breaker contacts.

Case sharing

The Shandong English Chemical Project includes a 35kV main substation and 3 10kV substations, with a total of 76 high-voltage cabinets. Each cabinet is equipped with 6-point wireless temperature measurement, using ATE200/ATE400 sensors and ASD320 intelligent control to achieve 24/7 online temperature measurement and real-time abnormal warning of high-voltage equipment throughout the station, effectively ensuring electrical safety in high-risk chemical scenarios and eliminating the risks of overheating, fire, and unplanned power outages.

Electricity safety is no small matter; precise temperature measurement ensures safety

Today, with the accelerated promotion of dual carbon and smart grid construction, electrical safety is no longer a "multiple-choice question", but a "compulsory course". Overheating of electrical equipment is the main hidden danger that causes power outages and electrical fires. Traditional temperature measurement methods have pain points such as large blind spots, an inability to monitor in real time, and difficulty in renovation.

Ankerui's all-scenario wireless temperature measurement integration solution has the core advantages of passive wireless, high-precision sensing, zero modification installation, and full chain intelligent control, shifting from passive repair to active prevention and control. The ATE series sensors do not require batteries, are maintenance-free, and are paired with the Acrel-2000T monitoring platform to achieve 24-hour multi-level warning and data traceability. They have been widely used in chemical, data center, transportation hub, and other scenarios, helping enterprises eliminate temperature blind spots, reduce operation and maintenance costs, prevent electrical fires, and truly achieve safety controllability, hidden danger prevention, data traceability, and accountability.

Product selection/solution/technical specification sheet

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