HYCA-05 Residual Current Monitoring Unit Product Introduction

Product Overview

The HYCA-05 Residual Current Monitoring Unit, developed by Wenzhou Heyi Electrical Co., Ltd., is a high-precision safety monitoring device designed for modern electrical protection systems. Utilizing advanced AC/DC-sensitive detection technology, it simultaneously monitors both AC and DC residual currents, effectively preventing electric shock hazards and fire risks caused by insulation faults in electrical equipment.

Key Advantages

1. Dual-Mode Detection Technology

   • Goes beyond traditional AC-only detection, employing innovative algorithms to precisely measure DC components (0–30mA range, ±0.5mA accuracy).

   • Ideal for modern applications such as EV charging stations where DC leakage poses significant risks.

2. Intelligent Self-Test System

   • Built-in automatic calibration via the TEST-IN pin for periodic zero-drift correction.

   • Internal fault simulation generates a 6.53mA DC test current to verify system reliability.

   • Dual digital outputs (X6-OUT/X30-OUT) provide cross-validation for accurate fault detection.

3. Industrial-Grade Reliability

   • Wide operating temperature range: -40°C to +85°C

   • High-altitude compatibility: Up to 4000m

   • Long service life: 20-year design lifespan

   • Compliant with IEC 62752 & IEC 62955 international standards.

Technical Specifications

Electrical Characteristics

• Power Supply: Precision LDO voltage regulation (recommended IC: LP2985A-50DB), 4.85–5.15V DC input, static power consumption <110mW.

• Current Monitoring: Supports 32A (typical) / 40A (max) three-phase primary conductors.

• Safety Clearance: 10mm electrical clearance and creepage distance between primary and secondary circuits.

Protection Performance

• DC Leakage Detection:

  • S-DC trip threshold: 4.5mA (typical)

  • 6mA response time: 100–1000ms

  • 200mA fast response: 50–100ms

• AC Leakage Detection:

  • 30mA AC: No trip (∞)

  • 150mA AC: Trips within 80ms

Innovative Applications

1. Smart Charging Safety Systems

   • DC leakage protection for EV charging stations.

   • Multi-point monitoring in charging station distribution cabinets.

   • PWM output (8kHz) for real-time current data transmission to Battery Management Systems (BMS).

2. Industrial Automation

   • Harmonic leakage detection in variable frequency drives (VFDs).

   • Insulation monitoring for photovoltaic (PV) systems.

   • Safety protection for medical equipment power supplies.

3. Smart City Infrastructure

   • E-bike charging stations.

   • Railway traction power systems.

   • Data center power distribution monitoring.

Engineering Support

1. Modular Design

   • Standard PCB-mountable form factor (see product dimension diagram).

   • Includes reference schematic for easy integration.

   • PWM interface (3.33%/mA resolution) for real-time monitoring.

2. Timing Control Guidance

   • System stabilization time (T0): 270ms

   • Calibration cycle (T2): 50–100ms recommended

   • Output signal delay settings for reliable readings.

3. Fault Diagnostics

   • Error pin (open-drain output) for fault indication.

   • Hysteresis comparator design (55%–100% threshold range) prevents false triggering.

   • High noise immunity (≤150mV ripple tolerance).

Quality Assurance

• RoHS/REACH compliant for environmental safety.

• Manufactured in Yueqing, China, a hub for smart electrical components.

• Comprehensive technical documentation & test reports available.

• Customization support (trip threshold adjustment, interface expansion, etc.).