GE IS200JPDBG1A AC Power Distribution Board

GE IS200JPDBG1A AC Power Distribution Board

GE IS200JPDBG1A AC Power Distribution Board

Brand： GE

Product ID： IS200JPDBG1A

Condition： New / used

Terms of payment： Paypal、T/T 、Western Union

Category:

Description

GE IS200JPDBG1A

I. Basic Information


Model: IS200JPDBG1A belongs to the classic Speedtronic Mark VI gas turbine control system featuring VME rack architecture (differentiated from Mark VIe). It is the core internal AC power distribution PCB assembled inside the IS2020JPDBAC module. Designed specifically for AC mains feed-in of main control racks, multi-channel 28VDC control power distribution, circuit protection and power status acquisition, it fits control cabinets of gas and steam turbine units with full TMR triple-redundant, dual-redundant and simplex configurations. As an essential replacement spare part for refurbishment and power component overhaul of legacy GE Mark VI units in power plants, it supports 24/7 continuous energized cabinet operation.


Product Positioning: AC-to-DC rack main power distribution backplane. It accepts 115/230VAC plant auxiliary power input from cabinets and supplies isolated multi-output 28VDC control power to processors, I/O modules, temperature sensing boards and switches. Integrated with branch fuses, manual circuit breakers and passive power monitoring circuits, it transmits fault signals back to the main control system via ribbon cables for alarm triggering. When paired with its matching DC distribution counterpart IS200JPDDG1A (JPDD), the two boards establish a complete high & low-voltage power distribution system for the whole cabinet.


II. Technical Specifications


(1) Basic Hardware Parameters

  • Brand: GE General Electric | Origin: USA
  • Type: Mark VI System AC Power Distribution Board (JPDB), encapsulated within IS2020JPDBAC metal housing
  • Compatible System: GE Speedtronic Mark VI gas/steam turbine DCS (VME 13-slot / 21-slot rack), incompatible with native Mark VIe platform
  • Mounting: Embedded into JPDBAC metal assembly and fixed in standard VME rack slots
  • Overall Dimension: 264mm(D) × 213mm(W), Net Weight ≈1.2kg; total assembly weight including outer casing ≈2kg
  • Protection Rating: IP20 (for sealed cabinet installation)

  • Onboard Configuration: 6-position toggle power branch switches, 8 cartridge fuses (6 fuses corresponding one-to-one with switches), 10 groups of pluggable terminals, 2 ribbon cable sockets for status collection


(2) Rated Electrical Parameters

  • AC Input: Auto-adaptive single-phase 115VAC/230VAC, 50/60Hz, rated single-circuit input capacity of 20A
  • DC Output: Multiple isolated 28VDC regulated control outputs centrally distributed to feed all control modules installed in the rack
  • Fuse Specification: Standard industrial cylindrical fuses providing branch overcurrent protection; short-circuit on individual branch will not cause total board power collapse
  • Monitoring Circuit: Passive voltage sensing circuitry fitted for every fused branch to continuously track AC input magnitude and branch open/fuse-blown status; collected data is consolidated via dual ribbon cables and fed back to the master controller

  • Terminal Definition: 8 sets of 3-pin terminals (JAC1～JAC6), 1 set of 5-pin AC input terminals, 1 set of 9-pin jumper terminals for separation of incoming power, branch outgoing wiring and status signal routing


(3) Environmental Specifications

  • Operating Temperature: -30℃～+65℃ (long-term cabinet service)
  • Storage Temperature: -40℃～+85℃ (warehousing & transportation)
  • Operating Humidity: 5%～95% RH (non-condensing). Complies with IEC529 dust protection and EN50178 safety standards; resistant to dust, oil mist and variable-frequency electromagnetic interference inside power plant control rooms.


IS200JPDBG1A.png


III. Key Features


Centralized AC-to-28VDC Power Distribution as Core Rack Power Hub

Centralizes cabinet AC auxiliary power input, stabilizes and filters incoming voltage before generating multiple isolated 28VDC outputs to feed Mark VI main CPUs, STTC/SRTD temperature boards and DI/DO discrete I/O modules, eliminating scattered external wall-mounted power adapters.

Graded Protection via Six Independent Switches plus Fuses for Isolated Fault Containment

Six independent manual disconnect switches with matched fuses. Short-circuit or overload on one module only blows its dedicated branch fuse and isolates the corresponding circuit, while all remaining power feeds stay intact to sustain critical unit control loops.


Full-Circuit Online Power Monitoring with Automatic Fault Alarm Upload

Onboard passive sampling circuits continuously detect AC phase loss, overvoltage, blown branch fuses and loss of branch supply. Fault information is uploaded via ribbon cables to trigger pop-up alarms on Mark VI upper HMI for rapid fault pinpointing.

Modular Integrated Design for Drop-In Replacement without Internal Cabinet Rewiring

All revisions of IS200JPDBG1A feature identical pinout and terminal definitions. Defective boards can be individually extracted and replaced from the JPDBAC base unit with no modification to external AC feed or secondary DC wiring.

Complementary Matching with JPDD DC Board for Complete Cabinet Power Layout

Used in conjunction with IS200JPDDG1A (JPDD DC distribution board): JPDB manages AC incoming power and 28V control power distribution; JPDD handles field loop distribution of 24V/48V/125VDC to form a full integrated rack power system.


IV. Working Principle


  1. Power Feed-In: 115/230VAC plant service power enters via AC terminals; onboard EMI filtering, rectification and regulation produce multiple isolated 28VDC supplies.
  2. Branch Output: Six toggle switches enable controlled power switching; after fuse current limiting, regulated power is routed via JAC terminals to all rack-mounted I/O and main control modules.
  3. Continuous Status Scanning: Sampling circuits permanently measure individual branch AC voltage and fuse continuity, consolidating collected data via two sets of ribbon cables.
  4. Fault Notification: Upon fuse blowout or branch power loss, altered sampled values are transmitted to Mark VI master controller to generate corresponding power fault alerts on upper monitoring software.
  5. Cyclic Power Supply: Stable regulated 28VDC output runs 24/7; manual switch operation allows live maintenance of single branches without disrupting overall system power.


V. Application Scenarios


(1) Legacy Mark VI Heavy-Duty GE Gas Turbines (9F/6FA/5E Series)

Factory-standard power board for VME main control racks of gas turbines, responsible for centralized 28VDC control power distribution for exhaust temperature measurement, bearing RTD monitoring and fuel valve discrete control circuits.

(2) Thermal Power Steam Turbine Generating Units (Legacy Mark VI Control Platform)

Power distribution for control cabinets of turbine governing, excitation and shaft protection systems paired with traditional VME-based CPU and I/O modules.


(3) Retrofit of Obsolete Gas Turbines at Chemical & Steel Captive Power Plants

Replacement of aged or burnt-out original power boards and capacity expansion of unit power systems; existing AC incoming and secondary wiring can be retained with only JPDB board replacement required.

(4) Spare Parts & Maintenance for Global Installed Base of Legacy GE Speedtronic Mark VI Units

contact us

Related products