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SPECIFICATIONS:
Part Number: IS2020JPDCG02
Manufacturer: General Electric
Series: Mark VIe
Board rating: 125 V dc
Product Type: Power Junction Distribution Module
Impedance to the ground: 75 Ohms
Power Requirements: +5 V dc, 6 A
Operating temperature: -30 to +65°C
Size: 30.48cm High x 21.33cm
Mounting: 4 mounting Holes
Repair: 3-7 Days
Availability: In Stock
Country of Origin: United States
Manual: GEH-6721G
FUNCTIONAL DESCRIPTION:
IS2020JPDCG02 is a Power Junction Distribution Module manufactured and designed by General Electric as part of the Mark VIe Series used in GE Distributed Control Systems. The Power Junction Distribution Module is essential for managing and distributing multiple power supplies throughout the system. It efficiently directs 125 V DC, 115/230 V AC, and 28 V DC to various boards and components, ensuring that each part of the control system receives the required power. Designed to endure the challenging conditions of industrial settings, this module is a reliable choice for maintaining stable and efficient turbine operations.
INSTALLATION:
The JPDC module is generally installed in a vertical orientation, with the 115/230 V AC input connector (JAC) positioned at the bottom. It is secured using four screws, which fit into mounting holes located at the top and bottom of the module’s base. While placement within the control cabinet is flexible, distribution boards are typically mounted toward the lower part of the cabinet to support grounding, as outlined in the Grounding section. The optional PPDA I/O pack connects to the JA1 connector and is fastened to the JPDC base via an angle bracket, held securely in place by nuts threaded onto pre-attached studs. Diagnostic input signals from other distribution boards are routed to the JPDC through a 50-pin ribbon cable connected to P2.
OPERATION:
The JPDC receives an input of either 115 V AC or 230 V AC through connector JAC, with a maximum allowable current of 12.5 amps RMS. It is recommended that the low or neutral side of the input power be grounded (refer to the functional diagram). The module provides two AC outputs, both safeguarded by a 10 A time-delay fuse on the high side only (Pin 1 of each connector). The output at JAC1 is controlled by toggle switch SWAC1, while the output at JAC2 remains unswitched.
The JPDC module can accept two battery inputs via connectors JD1 and JD2, as well as a third 125 V DC input from an AC/DC converter, such as the IS2020DACA, through connector JZ2. Each input typically passes through an external filter, with an input voltage range of 90 to 145 V DC. The two battery inputs are combined using diode module D1, and they are further merged with the 125 V DC from the DACA module via a diode on the DACA module. These combined 125 V DC inputs create a 125 V DC bus on the JPDC, labeled PDC, with return paths connected and labeled NDC. The total 125 V DC should not exceed 20 amps. All three 125 V DC inputs are isolated from the ground. Installing jumper JP2 connects each side of the 125 V DC bus to FE ground through approximately 84 k ohms of resistance, enabling ground fault detection.
WHY PURCHASE FROM WOC?
WOC is a trusted global supplier known for its extensive inventory of genuine GE Distributed Control System parts, ensuring fast availability when operations are at stake. Our team of certified engineers provides quick and reliable repairs, typically completed within 3-7 days, while maintaining strict OEM-level quality standards across all components. We offer competitive pricing on new, unused, surplus, and refurbished parts, along with comprehensive warranties for added peace of mind. With worldwide shipping capabilities and 24/7 technical support, WOC delivers the expertise, reliability, and responsiveness that industries depend on to keep their systems running smoothly.
What is the IS2020JPDCG02?
The IS2020JPDCG02 is a Power Junction Distribution Module used in GE’s Mark VIe Distributed Control Systems. It manages and distributes multiple power sources, including 125 V DC and 115/230 V AC, to various control boards and system components. Its robust design ensures reliable power delivery in demanding industrial environments.
What types of power inputs does the JPDC support?
The module accepts two 125 V DC battery inputs, one 125 V DC input from an AC/DC converter (such as the IS2020DACA), and a 115/230 V AC input. All DC inputs are isolated from ground and filtered externally. These inputs combine to form a stable 125 V DC bus for downstream components.
What protections are included in the module’s design?
The JPDC includes 10 A time-delay fuses on the high side of its AC outputs to protect connected equipment. Diode isolation is used to combine multiple 125 V DC sources safely. Ground-fault detection is enabled when jumper JP2 is installed, linking the DC bus to FE ground through resistance.
What is the maximum current supported by the 125 V DC bus?
The combined 125 V DC bus (PDC/NDC) supports a maximum current of 20 amps. This includes the total from battery inputs and the DACA converter. Exceeding this limit may result in overheating or protection-triggering conditions.
