DS3800NHVJ | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NHVJ is a high-voltage junction interface board for Mark IV systems—the “H” in the suffix indicates high-voltage functionality, the “V” indicates voltage, and the “J” indicates junction. This board provides isolated high-voltage junction connectivity for field device termination and signal distribution in turbine control systems. It was used in installations where high-voltage field device signals needed to be terminated and distributed to the Mark IV control system.

The board plugs into the Mark IV backplane and provides a high-voltage junction interface with electrical isolation to protect the backplane from voltage transients. Compare this to the DS3800NHVD (high-voltage digital interface) or the DS3800NHVF (high-voltage frequency interface). The NHVJ is specifically for high-voltage junction and distribution applications.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NHVJ board do?
The NHVJ is a high-voltage junction interface board for Mark IV systems. It provides isolated high-voltage junction connectivity for field device termination and signal distribution.

What’s the difference between the NHVJ and the NHVD?
The NHVJ is a junction interface for termination and distribution; the NHVD is a high-voltage digital interface. The NHVJ provides junction points for field device signals; the NHVD provides digital I/O connectivity.

What’s the voltage rating of this board?
The voltage rating depends on the specific configuration. Check the board’s label or your system documentation for the exact voltage rating.

Can I hot-swap this board?
No. Mark IV backplanes are not hot-swappable. Power down the cabinet, lock out the breaker, and wait 60 seconds before removing or installing the board.

What’s the most common failure mode on the NHVJ?
We’ve serviced about a dozen NHVJ boards. The most common failure is the junction point isolation circuitry—it can degrade over time, causing leakage or breakdown. The second most common failure is the edge connector—corrosion from humidity. The board is repairable.

What’s your warranty and lead time?
We stock the NHVJ in limited quantities. Lead time is 1-2 business days. We offer a 1-year warranty. We test every board with a 24-hour burn-in and a diagnostic verification. The test report is included.

Is this board compatible with the Mark VIe?
No. This board is for Mark IV systems only. The backplane architecture is different.

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