Product details
The trend in PV string inverters for large solar power plants is towards higher power classes. This requires current sensors with a higher current capability. The new MD Series leakage current sensor MD0630T41A
was specially developed to fulfill the requirements of string inverters from 80 kW to 255 kW and upcoming developments.
This series to even higher phase currents than 200 Arms. Leakage current sensors are used in the RCMU (Residual Current Monitoring Unit) in PV inverters. Leakage currents represent safety risks and thus impact the whole system. When the leakage current exceeds the limit acc. To IEC 62109, the inverter should shut down and disconnect. Therefore, the current sensors need to detect very small leakage currents while very high phase currents must not affect them.
Product parameters
Product Details
MD0630T41A is a high sensititivity AC DC leakage current sensor for solar inverter residual current detection, which can also be called residual current monitoring (RCM), residual current detection (RCD), differential current sensor, earth leakage detector, zero phase current transformer and fault current sensor. Dedicated to detect to Type AC, A, F, B and B+ leakage current measurement.
It has the characteristics of accurate measurement, small size and integration. The RCD sensor can be set separately for AC and DC leakage and has a digital output function. It can detect sinusoidal AC, pulsating DC, composite of multi-frequency as well as smooth DC residual currents. and are suitable for many industries including electric vehicle charging, photovoltaic systems (solar panels), industrial device, medical device, new energy, DC screen, fire distribution cabinet, IOT field. It is the technology that brings us closest to total protection for all known residual fault currents.
Product Features
AC/DC residual current detection, range AC3-100mA/DC 2-15mA
Space-saving/Compact design, Vertical/Horizontal Mount
Default Threshold for 6 mA DC and 30 mA AC, Digital Outputs
Measurement resolution of DC 0.2 mA/AC 0.3mA
AC DC Leakage Data Readable, Alarm Value Programmable, 3 Way Alarm Outputs
UART Comm, with Modbus Protocol, CE-EMC/TUV Certified
Functional Safety: ISO26262 up to ASIL B.
Complies with Applications Using These Standards:
UL 2231, IEC 62752, VDE 0664-400 (up to 2 kHz), AEC-Q 100 and AEC-Q 200 Components
Product Parameters
Wide voltage input: 12V±20%
Measuring current range: DC current 2-15mA; AC current 3-100mA (default threshold: DC 6mA, AC 30mA)
Accuracy class: at 25℃, DC±0,2mA, AC±0.3mA
Working environment temperature: -25℃～+80℃
Installation: Pin&Cable Type
Plastic casing: SIP encapsulation
Typical Application
MD series residual current sensor (RCD/RCM) is an ideal protection device, for the detection and protection of different leakage currents/residual currents/fault currents. The RCD could quickly output alarm signal when people get an electric shock or leakage current exceeds stipulated value, protecting personal and electrical equipment safety.
