News | | Nov 20,2025
Thailand continues its march towards a green energy era:
EV infrastructure construction is accelerating : the government is promoting the “one village, one charging pile” policy, and the number of public charging stations is growing rapidly;
Increased grid connection of renewable energy: A large number of photovoltaic and hydropower hybrid projects are being implemented;
Smart grid and digital upgrade of the power industry: Clean energy electricity billing requires high-precision real-time metering;
EV safety standards are being raised: Thailand has fully adopted the same RDC-PD (DC leakage detection) technology requirements as the European Union.
In these scenarios, current detection and residual current (leakage) protection become critical components, affecting not only safety supervision but also equipment compliance and operational efficiency.
The HYCA-01 Residual Current Monitoring Module (RDC) was developed precisely to meet this demand, making it a core current safety monitoring product that is perfectly suited for the Thai market.
HYCA-01 (RDC) – Tailor-made for renewable energy
According to the documentation, the HYCA-01 residual current sensor is an AC/DC sensitive residual current monitoring module compliant with IEC 62752/IEC 62955 standards , specifically designed for:
EV charging stations (AC, DC)
Home and commercial chargers
Floating photovoltaic inverter
Energy storage system
Power converter/rectifier
Intelligent power safety monitoring
Provides highly reliable leakage current detection capabilities.
HYCA-01 compatibility :
AC 30mA / DC 6mA leakage current detection
RDC-PD (DC Residual Current Protection)
The Thai government is aligning with the EU’s mandatory requirement that AC chargers must have DC 6mA leakage protection .
The HYCA-01 meets Thai safety regulations without modification, helping charging stations obtain certification quickly.
Particularly suitable for Thailand’s hot and rainy environment .
Product Support:
| index | HYCA-01 performance |
| Operating temperature | -40°C ~ +85°C |
| altitude | ≤4000m |
| Theoretical lifespan | around 20 years |
| PCB board mounting | Earthquake resistance and stability |
Thailand is hot and humid year-round with a variable climate (especially along the coast, on islands, and in outdoor charging station areas).
The HYCA-01 is suitable for deployment in outdoor EV stations, high-humidity environments, coastal cities, parking lots, shopping malls, and other similar scenarios.
Typical operating time for HYCA-01 AC/DC leakage current detection:
AC 30mA: 50–1000ms
DC 6mA: 48–1000ms
High frequency/high current: 8.5–60ms
In Thailand’s numerous public EV charging stations, taxi charging points, and motorcycle battery swapping stations, rapid leakage current cutoff is extremely important
to prevent electric shock, equipment damage, and fires caused by short circuits.
Built-in self-test reduces manual maintenance – ideal for distributed energy projects in Thailand.
Thailand’s EV infrastructure is characterized by “wide coverage, small sites, and decentralization”:
shopping malls and residential communities
Rural village-level charging piles
Convenience store charging facilities
Office building parking lot
HYCA-01 supports:
Automatic power-on calibration (Zero drift calibration)
Self-test for leakage current (for AC and DC assemblies)
Error pin indicates system failure.
This reduces the number of times engineers need to visit for maintenance, significantly lowering operation and maintenance costs.
PWM digital output, directly compatible with Thailand’s smart grid ecosystem.
The PWM output provides real-time data on 0–30mA DC residual current (resolution: 3.33%/mA).
adaptation:
EGAT in Thailand:
Ubon
Sirindhorn Dam
Bhumibol Dam (205MW)
To build a world-leading water-based photovoltaic system.
These system requirements:
High-reliability leakage current detection
Adaptable to humid and water-vapor environments
AC/DC leakage monitoring compatible with inverters and energy storage systems
The AC/DC leakage detection and high environmental adaptability of the HYCA-01 are a perfect match for the needs of floating photovoltaic systems.
Energy Storage System (ESS) and Inverter (Adapted to DC Leakage)
DC bias leakage is a common problem in energy storage systems. If not monitored, it can lead to:
The HYCA-01 residual current sensor detects a minimum DC current of ≈3–6mA , making it particularly suitable for inverter + battery systems.
Thailand is currently conducting a pilot program:
Clean energy trading (2,000MW)
Distributed photovoltaic metering
Enterprise ESG Power Tracking
The HYCA-01‘s high-precision detection + PWM output allows for direct connection to a platform, enabling:
Why is the HYCA-01 considered “the best-fit current safety module for the Thai market”
| Thai demand | HYCA-01 Perfect Fit |
| Upgrade of national standards for EV charging piles | Supports IEC 62752 / IEC 62955 |
| High temperature + high humidity + prolonged outdoor activities | -40~85°C, lifespan 20 years |
| EV public transportation stations have high safety requirements. | Millisecond-level AC/DC leakage protection |
| Charging stations are scattered and difficult to maintain. | Built-in self-test and calibration |
| Power distribution/PV/energy storage grid connection upgrade | AC&DC full-range monitoring |
| Smart metering, digital energy | PWM digital output, easy to integrate |
the HYCA-01 residual current sensor is perfectly suited to Thailand’s three hottest energy transition sectors: EV charging stations, floating solar panels, and energy storage systems.
HYCA-01 helps Thailand build a safer, greener future.
Thailand is undergoing one of the fastest energy transitions in Southeast Asia, with each technology, from floating solar panels on dams to a nationwide network of charging stations and a green electricity trading system, relying on safe, reliable, and intelligent current monitoring systems.
With its international standards, all-scenario adaptability, and high reliability, the HYCA-01 (RDC) is an ideal choice for energy projects in Thailand.
Compay：HEYI Electrical Co., Ltd.
Brand: HEYI/ASCT
Contact: Bethy
E-mail: heyi@heyiele.com
Tel: 86-13968747975
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