GE UR9UH | Multilin UR Series Universal Protection Device High-power Power Supply Module (High-voltage AC/DC Wide-range Power Supply) 

I. Product Positioning

UR9UH belongs to the UR9 series of rear power supply boards. It is the main power supply for the entire machine. It is inserted into the leftmost power slot of UR protection relays such as T60/L90/F60/B30/L90, providing unified backplane power supply for the CPU, I/O cards, and communication subcards of the entire machine; UH = High Voltage, a universal power supply for DC/AC substations.

Core Electrical Parameters

1. Input Specifications (UR9UH High Voltage Version)

Input Voltage: 125～250V AC / DC, universal (compatible with 110VDC, 220VDC, 220VAC common operation power supplies in substations)

Rated Output Power: 35W, can support full configuration of the entire machine (CPU + multiple I/O + optical communication card)

Built-in Fuse: 4A/250V built-in fuse, hardware overcurrent protection

Output: Multiple isolated regulated DC (+5V, +24V) for powering the backplane bus

2. Environment and Mechanics

Operating Temperature: -40℃～+70℃ (wide temperature industrial standard for power substations)

Weight: Approximately 0.98kg, UR standard rear-ｉｎｓｅｒｔ board structure, dedicated to the left slot of the chassis

Indicator Lights: Panel PWR operation LED, always on for normal operation, flashing for faults, off for power loss, device self-check reports EnerVista software power alarm

Compatible with the entire series of host machines

T60 main transformer protection, L90 line differential, B30 busbar differential, F60 feeder protection, C60/M60 motor protection, all models of UR microcomputer protection.

 Key Functions

Centralized power supply for the entire machine: The backplane bus supplies power uniformly, eliminating the need for independent power sources for each sub-card

Multiple protections: Overvoltage, undervoltage, overcurrent, short circuit, overheating automatically lockout output to prevent the entire machine CPU from being burned

Self-check in case of faults: Abnormal power supply is uploaded to the background through the device's internal self-check (EnerVista/SCADA alarm)

Redundant configuration: Can be paired with URRHH redundant power module to achieve seamless dual-power switching (switching < 5ms)