What this product is
The ER22005S is a standardized modular rack-mounted DC operating power converter designed for utility-grade protection and control panels. It integrates three-phase passive power factor conditioning, high-frequency isolation transformers, dual closed-loop PWM regulation, and compliance with DL/T 781 and IEC 62368 standards. It interfaces via dual CAN/RS485 buses to supervisory controllers for automated equalized charging, float charging, and predictive health monitoring.
What problem it solves
It eliminates vulnerability to phase imbalances, transient line surges, and sudden bus voltage dips caused by large trip-coil discharges in circuit breakers. It eliminates high ripple voltages that accelerate substation battery plate sulfation, while enabling continuous, zero-downtime hot-swap servicing during live operation without disrupting critical relay protection circuits.
Who and where it is for
Tailored for 10kV to 500kV electrical substations, generation plants (thermal, hydro, nuclear), transmission grid switchyards, metro transit traction substations, and heavy industrial distribution panels powering DC trip coils, protection relays, and telemetry units.
