HK Electrical Products

SF₆ density monitor with remote transmission. Local display, contact output, temp compensation, dual mechanical/electronic – online monitoring for GIS.

SF₆ Gas Density Monitor – Reliable Density Monitoring with Three-Way Self-Sealing Valve Option

HLM068 portable SF₆ leak detector with NDIR sensing. 0.1ppm resolution, ppm/g/y units, OLED display, sound/light alarms – for GIS and RMU.

HNA1013 SF₆ detector with dual-wavelength NDIR. Measures SF₆, O₂, temp, humidity. RS-485/Zigbee, alarms, OLED display – for industrial safety.

Input reactors prevent line power overload, reduce harmonic distortion from frequency inverters, improve input supply quality, suppress ultraharmonics and surge protection for power supply units.

Wone dv/dt filters reduce PWM inverter common-mode voltage, minimize motor terminal peak voltage and overvoltage, prevent bearing currents and EMI.

LCL filters ensure efficient renewable energy grid integration by filtering inverter switching frequencies with minimal loss, compact size, light weight, and high capacitance for cost-effective power quality improvement.

Three-phase active harmonic filter (HFR) for inverters, dynamically canceling harmonics to improve power quality and reduce equipment stress.

Mine explosion-proof inverter reactor heat reduction methods ensure operational reliability and machine lifespan in confined closed spaces through optimal magnetic core and conductor selection.

Motor reactor at frequency converter output limits cable capacitive charging current, smooths PWM voltage rise rate, and compensates for long cable capacitance effects in motor drive systems.

Three-phase sine wave filter (SFR) for inverters and motor drives, reducing harmonic distortion to protect motors and extend system life.

Energy feedback reactor and filter combination mitigates high-order harmonic currents from IGBT rectifier units in frequency converters during regenerative braking, improving power quality and reducing grid pollution.