DS3800NHVH | New Surplus GE Turbine Control Board

Description

Product Introduction

The DS3800NHVH is a high-voltage H-Bridge interface board for Mark IV systems—the “H” in the suffix indicates high-voltage functionality, the second “V” indicates voltage, and the final “H” indicates H-Bridge. This board provides isolated high-voltage H-Bridge connectivity for motor control and actuator drive applications in turbine control systems. It was used in installations where H-Bridge motor drives or actuators 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 H-Bridge 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 NHVH is specifically for high-voltage H-Bridge applications where isolation and protection are critical.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

What does the NHVH board do?
The NHVH is a high-voltage H-Bridge interface board for Mark IV systems. It provides isolated high-voltage H-Bridge connectivity for motor control and actuator drive applications.

What’s the difference between the NHVH and the NHVD?
The NHVH is specifically for H-Bridge interfaces (motor control, actuator drives); the NHVD is a high-voltage digital interface. The NHVH has H-Bridge-specific output capabilities; the NHVD has general digital I/O.

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 NHVH?
We’ve serviced about a dozen NHVH boards. The most common failure is the H-Bridge output driver circuitry—it can degrade over time, especially under high-current loads. 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 NHVH 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.

TRICONEX 4351B
GE IS420UCSBH4A
SIEMENS 6SE7027-2TD61