Transformer core clamp on-line monitoring and current limiting device-Core clamp grounding current monitoring system manufacturers

Transformer core clamps online monitoring and current limiting device

If the core of a power transformer has multiple points of grounding, the internal circulating current will be generated, triggering localized overheating, and in serious cases, the core will be burned and the grounding lugs will be fused, resulting in potential levitation and threatening the safe operation of the equipment. Industry regulations require online monitoring of transformer core grounding current, with a limit of 100 mA. IN203X Online monitoring and current limiting of transformer core clampsfixturesIntegrated zero flux current transformer, data acquisition and display terminal, current limiting resistor automatic switching device and power supply module, optional background monitoring software. It adopts single-turn core-piercing zero magnetic flux transformer with adaptive dynamic electronic circuit for excellent linearity, and three-layer shielding design for better anti-interference and electromagnetic compatibility. Capable of accurately capturing ground currents from 1mA - 10A, with measurement accuracy up to standard reading ±5% + 1mA and resolution of 1mA, it can accurately detect both tiny insulation leakage currents and large current fault signals.

The device is equipped with real-time monitoring, local display, data collection and storage, current suppression, trend analysis, over-limit alarm, remote monitoring and other functions. It can automatically cut the four-stage current limiting resistor, and quickly respond to reduce the grounding current. Adopting Modbus and DL/T860 communication protocols, it is suitable for AC220V±10% power supply, and can operate stably in the temperature from - 40℃ to + 70℃, and in the environment of 0-95% non-condensing humidity, with the protection level up to IP55, which is widely applicable to different voltage level scenarios.Functions can be customized, please contact InnoTech for details!

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Transformer core clamps online monitoring and current limiting device
IN-203X Online monitoring system for current limiting iron core clamps

System Components

IN203X Transformer Core Clamp Online Monitoring and Current Limiting Device for TransformersIt consists of zero flux current transformer, data acquisition and monitoring display terminal, current limiting resistor automatic switching device, power supply module and background monitoring system software (optional). It has the function of automatically cutting four-stage resistance as an emergency response measure to reduce the grounding current.

system function

IN-203X Transformer Core Clamp Online Monitoring SystemIntegrating real-time monitoring, on-site display, data acquisition, current suppression, trend analysis, over-limit alarm, remote monitoring, data storage and query, etc., it is designed to comprehensively and accurately monitor the health status of transformer cores and their clamps, effectively detecting and warning potential faults in advance, and providing reliable data support for the safe and stable operation of the power system and the condition-based maintenance strategy.

Equipment parameters

Monitoring Objects	Core and clamp grounding current	Measurement range	1mA ~ 10A
Measurement accuracy	Standard reading ±5% + 1mA	resolution (of a photo)	1mA
Number of casting steps	four-part	communication protocols	Modbus, DL/T860
Device power supply	AC220V ±10%	application scenario	Different voltage levels
environmental adaptation	Ambient temperature: -40℃ ~ +70℃; Ambient humidity: 0 ~ 95% (no condensation)	protection class	IP55

Tags::Online monitoring of transformer core clamps - Current-limiting resistor automatic switching device

Transformer core clamps online monitoring and current limiting device

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