IS200JPDFG1AED - Power Distribution Board

SPECIFICATIONS

Part No.: IS200JPDFG1AED
Manufacturer: General Electric
Product Type: Power Distribution Board
Size: 12 in. x 8.4 in. x 6.3 in.
Mounting: Four mounting holes, 10 screws
Temperature Operating: -30 to 65oC
Availability: In Stock
Country of Manufacture: United States (USA)
Series: Mark VIe

Functional Description

IS200JPDFG1AED is a Power Distribution Board developed by GE. It is a part of Mark VIe control system. The board manages and distributes 125 V DC power within the control system. It is designed to accept redundant 125 V DC power inputs and ensure reliable power distribution to various system boards. One of the key features of the board is its operation with a floating DC bus, which is centered on earth rather than grounded. This design enables the detection of system ground faults while maintaining a non-hazardous live 125 V DC rating. The floating DC bus approach enhances system safety and reliability by ensuring early fault detection and isolation.

Functionality and Power Distribution

The module receives 125 V DC battery power, which is connected via a terminal board on the module. The power is routed through a 125 V DC 30 A circuit breaker and a line filter before reaching the IS200JPDF board via the J1 connector. The board efficiently distributes power using:

• Three fused, non-switched outputs
• Six fused, switched outputs

Additionally, AC power is routed through the board to the DACA modules, where it is converted to DC power. The converted DC power returns to the JPDF, where it combines with the battery power input. This flexible design allows the JPDF to function with any combination of one or more active inputs, providing a highly reliable 125 V DC power source for the control system.

The module features a comprehensive status feedback system via a connection to a PPDA I/O pack. This feedback system includes:

• Bus voltage magnitude monitoring
• Ground fault detection
• Detection of excessive AC voltage on the DC bus
• Monitoring of each fused branch circuit to confirm output power presence

Installation

The module is base-mounted vertically on a metal back base inside a cabinet used by the Power Distribution Module (PDM). Proper installation requires:

• Connecting the sheet metal to the system protective earth (PE).
• Applying input battery power to terminals DCHI and DCLO.
• If DACA modules are used, AC power should be applied to JAF1, typically from an IS2020JPDB module.
• Connecting DACA modules to JPDF through JZ2 and JZ3 connectors.
• Ensuring output circuits are connected as per the system documentation.
• For systems using a PPDA power diagnostic I/O pack, a 50-pin ribbon cable must connect the JPDF P1 connector to the P2 connector on the board holding the PPDA. This connection may pass through other core PDM boards using the P2 connector.

Grounding Considerations

The Mark VIe system divides grounding into two categories:

• Protective Earth (PE): Must be connected to a suitable earth connection per local regulations. Should support a minimum of 60 A for 60 seconds with no more than a 10 V drop.
• Functional Earth (FE): Must be bonded to the PE ground at a single point.

The module is grounded through metal mounting supports, which are attached to the underlying sheet metal of the metal module. Grounding is further reinforced via metal switch bodies on JPDF, ensuring a stable local reference point for feedback signals appearing on P2.

The module's sheet metal is insulated from the mounting surface, allowing an independent definition of JPDF ground. Typically, the JPDF board is mounted to a back base that is grounded to FE. It is positioned low within the cabinet, with a separate ground wire connecting the JPDF module to PE. The ground wire length should be minimized to keep impedance low at radio frequencies, enabling the input line filters to function effectively. 

World of Controls has the most comprehensive collection of GE Mark VIe components. Please contact WOC as soon as possible if you require any extra information.

Frequently Asked Questions

What is IS200JPDFG1AED?
It is a Power Distribution Board developed by GE.

What are the voltage feedbacks used for in the diagnostic system?
The two 125 V DC voltage feedbacks are used for Determining voltage magnitude, Ground fault detection, AC signal presence detection.

How do the fused DC supply indications work in the diagnostic system?
The fused DC supply indications monitor the supply voltage levels across different points. Specifically, there are six switched/fused DC supply indications for connections J1R, J1S, J1T, J7X, J7Y, and J7Z, and three fused DC supply indications for J8A, J8B, and J12. These indications help ensure proper operation and alert for any issues related to power supply.

What is the purpose of the hardware test rings labeled PDC Probe and NDC Probe?
The two hardware test rings, labeled PDC Probe (HW1) and NDC Probe (HW2), are used for attaching test equipment. These probes allow for easy connection to the diagnostic system for monitoring or troubleshooting purposes, with each probe having a series 100 kohm resistor for accurate measurements.