DS3800NHVF | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NHVF is a high-voltage frequency interface board for Mark IV systems—the “H” in the suffix indicates high-voltage functionality, the “V” indicates voltage, and the “F” indicates frequency. This board provides isolated high-voltage frequency connectivity for speed sensing and position feedback applications in turbine control systems. It was used in installations where frequency signals from encoders, tachometers, or other speed sensors needed to be interfaced with the Mark IV control system at higher voltages.

The board plugs into the Mark IV backplane and provides a high-voltage frequency interface with electrical isolation to protect the backplane from voltage transients. Compare this to the DS3800NHVE (high-voltage encoder interface) or the DS3800NIOA (standard I/O board). The NHVF is specifically for high-voltage frequency applications where isolation and protection are critical.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NHVF board do?
The NHVF is a high-voltage frequency interface board for Mark IV systems. It provides isolated high-voltage frequency connectivity for speed sensing and position feedback applications.

What’s the difference between the NHVF and the NHVE?
The NHVF is specifically for frequency signals (speed, tachometer); the NHVE is for encoder interfaces. The NHVF has frequency-specific input capabilities; the NHVE has encoder-specific inputs.

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 NHVF?
We’ve serviced about a dozen NHVF boards. The most common failure is the frequency input 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 NHVF 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.

FOXBORO FCP280
REXROTH CFG-RD500-NN-T1
TRICONEX 3008