Input Specification

Input Voltage: 125 VDC (supplied from EPDM power module)

Isolation: Input-to-output electrical isolation ≥ 1000 VDC

Output Configuration

Regulated Outputs:

+5 VDC

±15 VDC

+24 VDC

+70 VDC (isolated contact wetting supply)

High-precision voltage regulation with low ripple and high stability

Core Architecture

Multi-stage power conversion topology:
Buck regulator → Push-pull inverter → Isolation transformer

Integrated IS200EPSDG_A daughter board to enhance insulation strength, creepage distance, and protection performance

Physical Specifications

Dimensions: Approx. 8 × 18.6 × 26.1 cm

Weight: Approx. 0.9–1.14 kg

Mounting: DIN-rail installation

Connectors: Fool-proof keyed connectors to prevent incorrect insertion

Operating Environment & Certification

Operating Temperature: –30 °C to +65 °C

Humidity: 5%–95% (non-condensing)

Compliance: UL / CE / RoHS

Protection & Diagnostics

Overvoltage, overcurrent, and short-circuit protection

Output fault detection and diagnostic reporting

On-board LED indicators for real-time output status

Core Functions & Adaptability
Voltage Regulation & Conversion

Converts the 125 VDC excitation bus into multiple regulated control voltages required by system boards such as EDCF, EDEX, and EGDM, ensuring stable and reliable power delivery for excitation control functions.

Enhanced Isolation Safety

Provides high input-to-output isolation with reinforced insulation design. The use of an isolation transformer and enhanced creepage/clearance on the daughter board significantly improves overall system safety and fault tolerance.

System Coordination & Integration

Designed to operate in conjunction with the EPDM power module. Installed in the designated EPSM slot of the EX2100 control rack, the module supports hot swapping, enabling maintenance or replacement without system shutdown.

Fault Diagnosis & Maintainability

Real-time LED status indication allows rapid identification of output abnormalities, helping maintenance personnel quickly locate power faults and minimize system downtime.