
BIM-CH1 Insulation Monitoring Device
BIM-CH1 is designed for continuous insulation monitoring in unearthed (IT) DC systems, supporting voltage ranges up to DC 100–1000 V. The
Precise revenue-grade energy metering, real-time insulation monitoring, and full-range residual current protection ensure safe, compliant, and profitable operation for all AC & DC charging stations.
EV charging stations rely on three critical electrical safeguards for reliable, safe operation: compliant energy measurement for billing, continuous insulation monitoring for isolated DC circuits, and comprehensive residual current detection to mitigate shock and fire risks.
Our solution covers the three core functional demands of EV charging systems: accurate energy revenue metering, real-time insulation health monitoring, and full-type residual current leakage protection. It fully adapts to household, commercial, public fast-charging and station-level centralized charging scenarios, complying with IEC 61851 and latest global EV charging safety standards.
DC fast‑charging stations face insulation risks from humidity, dust and cable aging. Isolated DC circuits lack effective ground‑fault detection, which may cause equipment damage and electrical hazards.
Our IMD monitors DC+/DC‑‑to‑earth insulation resistance for isolated DC charging loops. It issues early deterioration alarms for proactive diagnosis. Running continuously without power interruption, it prevents shock and hardware failure.
EV chargers produce mixed AC, pulsating‑DC and smooth‑DC leakage currents. Standard RCDs cannot pick up DC leakage, leaving hidden micro‑leakage risks. Build‑up leakage leads to overheating and fires; frequent connector use and aging raise electric‑shock dangers.
Our standard‑compliant RCM detects full‑spectrum mixed AC‑DC residual current. It tracks real‑time micro‑leakage to prevent overheating‑caused fires and electric shocks, offering essential safety protection for public and commercial charging stations.
Discover our high-performance, intelligent and cost-effective solutions. We help advance your EV charging station projects while enabling reliable safety protection and precise billing throughout the charging process.

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