MD0630STA-PM RCD: Type B Quality, Type A Price!

Cost-effective Type B RCD sensors, such as the newly developed sensor from IVY Metering (MD0630STA-PM), can detect both AC and DC leakage currents at a lower cost than traditional Type B RCDs by integrating specialized sensors into EV chargers and other devices. This sensor offers a compact, integrated solution that complies with the IEC 62955 and IEC 62752 standards for EV charging, protecting against dangerous DC fault currents that could cause Type A RCDs to fail.

Residual current detection and protection are essential functional modules for every EV charger, directly protecting personnel and preventing fire hazards caused by continuous ground fault currents.

Smoothed DC residual current protection for charging piles is already common in Europe, with IEC 61581-1 specifying two options:

① RCD Type B

② RCD Type A and IEC 62752 (for Mode 2 IC-CPD charging piles) and IEC 62955 (for Mode 3 RDC-DD charging piles) further specify the requirements for smoothed DC residual current.

To address this market situation and meet the relevant domestic and export standards of charging pile customers, IVY Metering has launched a low-cost Type B residual current detection solution with fully domestically produced key components. This solution flexibly adapts to various application scenarios, helping customers improve charging pile quality, enhance safety, and reduce costs.

Compared to conventional Type A and AC residual current detection solutions, Type B residual current detection solutions avoid the issue of failure in the presence of DC leakage current and offer a full range of detection options (sinusoidal AC, pulsating DC, and smooth DC).

Compared to other Class B residual current detection modules, the MD0630STA-PM module offers the following advantages:

Ultra-compact size, portable installation

Type B functionality, but Type A pricing

Reasons why sensors are more cost-effective than Type B RCDs:

Type B RCD Requirements: This requires a Type B RCD capable of detecting both AC and DC fault currents, but these integrated devices are expensive.

Sensor Solution: Type B RCD sensors provide the necessary DC detection (typically 6mA) by being integrated into the charger itself. This integrated approach is a more cost-effective solution for electric vehicle charging equipment (EVSE) manufacturers and integrators.

Key Features of the Type B RCD Sensor:

Detects AC and DC Leakage: Monitors alternating current (AC) and direct current (DC) fault currents, including pure DC and high-frequency AC.

Safety Standards Compliance: Complies with relevant safety standards such as IEC 62752, IEC 62955, and IEC 61851-1, ensuring safe EV charging.

Integration into Devices: Designed for direct integration into EV charging stations (Mode 3) and portable EV chargers (Mode 2), typically via a PCB.

Alarm Signal Output: When a hazardous leakage current (e.g., 6mA DC) is detected, the sensor triggers an alarm signal, activating the charging station's safety mechanisms.

Compact and Sensitive: Provides accurate and precise measurement of extremely low leakage currents, a critical safety requirement.