HYCA-02 Residual Current Monitoring Unit

The HYCA-02 from Wenzhou Heyi Electrical Co., Ltd. is an advanced residual current detection module designed for safety-critical applications in power systems. This compact, PCB-mounted solution offers precise AC/DC leakage current monitoring with integrated self-test capabilities, making it ideal for electric vehicle charging infrastructure, industrial equipment, and power converters.

Key Features of HYCA-02

·        Dual Digital Outputs:

o   X6-OUT (DC Trip): Triggers high-impedance state when DC residual current exceeds 4.5mA or system fault occurs.

o   X20-OUT (AC Trip): Triggers high-impedance state when AC residual current exceeds 17.8mA or system fault occurs.

·        Precision PWM Output:

o   Provides an 8kHz PWM signal with 3.33%/mADC resolution (0–30mADC range) for accurate DC residual current measurement (±0.5mA accuracy).

·        Integrated Self-Test & Calibration:

o   TEST-IN Pin: Initiates zero-point calibration and generates a simulated 6.53mADC test current for system validation.

o   Error Output: Open-collector pin indicates system faults (high-impedance when fault detected).

·        Hysteresis Protection:

o   Intelligent flip thresholds (100% trip / 55% recovery) prevent signal oscillation during transient conditions.

·        Robust Design:

o   Supports 3-phase primary conductors (32A nominal, 40A max).

o   Operates in harsh environments (-40°C to +85°C, up to 4000m altitude).

Recommended Applications

·        EV Charging Stations: Ensures safety in public charging points for electric vehicles, bikes, and motorcycles.

·        Industrial Power Systems: Ground fault detection in machinery and converters.

·        Renewable Energy Systems: Leakage current monitoring in solar/wind power inverters.

Technical Highlights

·        Power Supply: 5VDC (±3% tolerance, ≤150mV ripple; LDO recommended).

·        Efficiency: Low static power consumption (≤110mW).

·        Safety Compliance: Meets IEC 62752, IEC 62955 (RDC-PD), and UL2231 standards.

·        Reliability: 20-year design life with RoHS/REACH compliance.

Why Choose HYCA-02?

1.     Comprehensive Protection: Dual outputs for AC/DC faults and system error detection.

2.     High Precision: PWM output enables real-time residual current monitoring.

3.     Self-Test Ready: Built-in validation ensures long-term reliability.

4.     Compact Integration: 8-pin PCB design saves space in modular systems.

For safety-critical applications demanding accuracy and durability, the HYCA-02 sets the benchmark for residual current monitoring.