DS3800NHVL | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NHVL is a high-voltage line interface board for Mark IV systems—the “H” in the suffix indicates high-voltage functionality, the “V” indicates voltage, and the “L” indicates line. This board provides isolated high-voltage line connectivity for field device termination and signal distribution in turbine control systems. It was used in installations where high-voltage line signals needed to be interfaced with the Mark IV control system.

The board plugs into the Mark IV backplane and provides a high-voltage line interface with electrical isolation to protect the backplane from voltage transients. Compare this to the DS3800NHVJ (high-voltage junction interface) or the DS3800NHVD (high-voltage digital interface). The NHVL is specifically for high-voltage line applications where isolation and protection are critical.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

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

What’s the difference between the NHVL and the NHVJ?
The NHVL is a line interface for signal distribution; the NHVJ is a junction interface for termination. The NHVL typically handles line-level signals; the NHVJ provides junction points for field device termination.

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 NHVL?
We’ve serviced about a dozen NHVL boards. The most common failure is the line interface circuitry—it can degrade over time, causing signal loss or noise. 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 NHVL 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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