Emerson Ovation 5A26137G08 Rack Secondary Power Distribution Module_Ningde Androld Automation Equipment Co.,Ltd.

June 11, 2026

Emerson Ovation 5A26137G08 Rack Secondary Power Distribution Module

The 5A26137G08 is an original plug-in secondary power distribution module for Emerson Ovation DCS racks. The suffix G08 represents a revised hardware version with factory full-load aging test, precise voltage calibration and reliability validation. It works in tandem with rack redundant main power supplies to execute internal cabinet DC power branching, independent branch fuse protection, real-time electrical parameter monitoring and fault alarm uploading. It supplies isolated DC working power separately to DPU controllers, various I/O electronic modules and supporting termination bases. Each power branch features independent protection and operation status detection, and supports hot-swap maintenance under dual redundant power supply running conditions. As a key power distribution component for standard Ovation control cabinets, it is widely applied in thermal power, petrochemical, metallurgy and other continuous process industries.

Description

2.1 Multi-channel Isolated Branch Power Distribution

Implements single-input multi-output power shunting; electrical isolation is arranged between different output branches, each branch independently supplies power to a fixed group of rack modules. Overload or short-circuit fault on one individual branch cannot spread to other branches or the overall rack input power supply.

2.2 Per-branch Independent Fuse Overcurrent Protection

Each power branch is configured with a dedicated replaceable miniature fuse. Short circuit or overload will only blow the corresponding branch fuse, without causing full rack power outage; spare fuse holders are reserved to support rapid on-site maintenance and replacement.

2.3 Real-time Sampling & Remote Upload of Power Parameters

Onboard sampling circuits continuously collect each branch’s output voltage, load current and the module internal temperature. Operation data can be remotely uploaded to operator stations for real-time display and historical trend storage.

2.4 Latched Local Fault Indication & Remote Alarm Triggering

When fuse burnout, branch voltage abnormality, overload or overtemperature occurs, the module latches the fault state, lights up the front panel local fault indicator, and sends an alarm signal to the upper monitoring platform for remote fault prompt and fast positioning.

2.5 Support Online Hot-swap Maintenance

When dual redundant main power supplies run normally, this distribution module can be replaced online without cutting off power for the whole cabinet. Existing control logic and closed-loop regulation loops keep continuous undisturbed operation.

2.6 Built-in EMI Filter Anti-interference Circuit

An input-side high-frequency filter suppresses grid surges and coupled electromagnetic interference, reduces output voltage ripple, and improves power supply quality and stable running performance of downstream control modules.

2.7 Native System Compatibility

Perfectly matched with Ovation standard racks, backplanes, redundant power supplies, DPUs and full-series I/O modules. No adapter boards or cabinet reconstruction modifications are required for installation, suitable for new cabinet assembly and spare part replacement during unit renovation projects.

3. Key Technical Specifications

Mounting Mode: Standard Ovation rack plug-in installation
Input Power: DC power output from rack redundant main power supply modules
Output Mode: Multiple mutually independent isolated DC power branches
Branch Protection: Independent replaceable fuse per channel, overcurrent limiting, short-circuit lockout
Monitoring Items: Branch output voltage, load current, internal temperature, fuse status
Isolation Performance: Reinforced electrical isolation between input and each output branch
Operating Temperature: 0 ℃ ~ +60 ℃
Storage & Transportation Temperature: −40 ℃ ~ +85 ℃
Relative Humidity: ≤95% RH, non-condensing
EMC Compliance: Complies with industrial G3 anti-corrosion grade and power plant cabinet anti-interference requirements
Hot-swap Restriction: Hot plugging is only allowed when dual redundant main power supplies are in normal operating state

4. Front Panel LED Indicator Definition

PWR IN (Green): Steady ON = total input power normal; OFF = input power loss or abnormal
BRx OK (Green): Independent branch power normal indicator; steady illumination denotes normal operation
FAULT (Red): Lights up for blown branch fuse, overload, undervoltage or overtemperature; fault status latched
COMM (Green): Periodic flashing = normal data communication with backplane DPU

5. Application Scope

Thermal Power Industry
Installed in boiler, turbine, generator main control cabinets and auxiliary system cabinets, realizing partitioned power supply protection and centralized power monitoring for DPUs and all slot-mounted I/O modules inside the rack.
Petrochemical Industry
Deployed in control cabinets of reactors, fractionators and compression units, implementing segmented power protection for each control loop and avoiding full-unit control shutdown caused by single branch failure.
Metallurgy, Waste Incineration Power Plants & District Heating Stations
Undertakes secondary power distribution and branch fault monitoring for automation control cabinets, ensuring long-cycle unattended stable operation of the whole production line control system.

Contact Info