IS400JPDFG1A - DC Power Distribution Module

Functional Description

IS400JPDFG1A is a DC Power Distribution Module developed by GE. It is a part of Mark VIe Control system. This 125 volt power distribution module accepts redundant 125 volt dc power inputs and distributes power to other system boards. rather than a grounded system, it works with a floating dc bus that is centered on the earth. This detects system ground faults and has a non-hazardous live 125v dc rating.

Features

1. Input A terminal board on the module is powered by a 125 V dc battery. Before being connected to the board via the J1 connector, the power is routed through a 125 V dc 30 A circuit breaker and line filter. The alternating current voltage is then routed to three fused non-switched outputs and six fused switched outputs.

2. The board routes alternating current power to the DACA modules, which convert it to direct current power. DC power is returned and combined with the battery power input. can operate with any combination of one or more inputs active, resulting in a high-reliability 125v dc power source for the control system.

3. The module provides full status feedback via a PPDA I/O pack connection. Feedback includes detection of bus magnitude, ground faults, and excessive ac voltage on the dc bus. Each fused branch circuit is checked for the presence of output power.

Installation

1. The module is vertically mounted on a metal back base in a PDM cabinet. Sheet metal must be connected to the system's protective earth (PE). Terminals DCHI and DCLO receive input battery power. When one or two DACA modules are used, alternating current power is applied to JAF1. JZ2 and JZ3 connectors connect DACA modules.

2. The system's output circuits are connected as documented. A 50-pin ribbon cable from connector P1 to the P2 connector on the board is required for a power distribution system with a power diagnostic I/O pack. Using the P2 connector, this connection can be extended to other core PDM boards.

Operation

1. Terminals DCHI and DCLO are powered by a dc battery. It then passes through a 30A dc circuit breaker into a filter assembly beneath the circuit board. The filter output is then routed to the circuit board via a series diode. The JAF1 connector receives alternating current power.

2. The 115/230 V alternating current is routed to two connectors, JZ2 and JZ3, and then out to two modules. The modules convert alternating current to direct current (125 V dc). DC power returns to JPDF via the same JZ2 and JZ3 connectors, where it is combined with battery power if present.