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SPECIFICATIONS:
Part Number: IS2020RPSMG1A
Manufacturer: General Electric
Series: Mark VI
Product Type: Redundant Power Supply Module
Analog output current: 0-20 mA
Size: 15.9 cm high x 17.8 cm wide
Frequency: 50 or 60 Hz
Repair: 3-7 Day
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6421M
FUNCTIONAL DESCRIPTION:
IS2020RPSMG1A is a Redundant Power Supply Module Manufactured and designed by General Electric as part of the Mark VI Series used in GE Speedtronic Turbine Control Systems. The redundant power supply module (RPSM) parallels two independent power supplies to provide ten output voltages with improved reliability. ORing diodes are used to OR the outputs of one supply with the outputs from the second redundant supply. Nine of the paralleling circuits have an additional current limit function. All output circuits have an LED status indicator. The following figure shows the power and signal flow for two paralleled power supplies that provide power to a Mark* VI control rack. To provide redundancy, the outputs of each supply are passed into the RPSM, ORed, and the redundant voltages are passed out the RPSM outputs. The RPSM module mounts on the side of the control rack in place of the power supply. The two power supplies that feed the RPSM are remotely mounted.
INSTALLATION:
The RPSM module is mounted to the right-hand side of the VME rack on a sheet metal bracket. The status and 28 V DC output connections are at the bottom. Two connectors, PSA and PSB, at the top of the assembly, connect with a cable harness carrying power to the VME rack. The four 15-pin connect-N-Lock connectors at the back side of the module are the primary power feeds from the remotely mounted power supplies. The RPSM module is mounted to the right-hand side of the VME rack on a sheet metal bracket. The status and 28 V DC output connections are at the bottom. Two connectors, PSA and PSB, at the top of the assembly, connect with a cable harness carrying power to the VME rack. The four 15-pin connect-N-Lock connectors at the back side of the module are the primary power feeds from the remotely mounted power supplies.
OPERATION:
The ten outputs of two supplies are ORed together using low forward drop Schottky diodes. If an output of one of the supplies fails, the corresponding output on the other supply will pick up the full load through the diode. It is not intended that the two supplies equally share the load current, but if a short occurs on an RPSM output, it is possible to supply twice the normal short circuit current to the load. To prevent this, all of the outputs of the ORing diodes, except the 5 V, have an additional current limit circuit.
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What is a Redundant Power Supply Module?
A Redundant Power Supply Module is a component in a system that provides backup power in case the primary power source fails. It ensures continuous and reliable operation by seamlessly switching to a secondary power source.
Why is Redundant Power Supply important?
Redundant Power Supply is crucial for systems that require high availability. It minimizes the risk of downtime by providing a backup power source, ensuring uninterrupted operation even if one power supply fails.
How does a Redundant Power Supply work?
Redundant Power Supply Modules typically operate in parallel. If one power supply fails or experiences issues, the system automatically switches to the other working power supply without interruption, maintaining a constant power flow.
