DS200SHVIG1A - SCR High Voltage Interface Board

SPECIFICATIONS:

Part Number: DS200SHVIG1A
Manufacturer: General Electric
Series: Mark V
Input Voltage: 110V - 480V AC
Output Voltage: 0 - 600V DC
Control Voltage: 5V / 12V / 24V DC
Current Rating: 10A - 200A
Switching Frequency: 50Hz / 60Hz
Product Type: SCR High Voltage Interface Board
Sample Rate: Up to 100 kS/s per channel
Power Requirements: +5 V dc, 6 A
Response Time: < 10µs
Isolation Voltage: 2500V RMS
Logic Levels: 3.3V and 5V compatible
Operating Temperature: -40°C to +85°C
Size: 30.48cm High x 21.33cm
Mounting: 4 mounting Holes
Repair: 3-7 Day
Availability: In Stock
Country of Origin: United States
Manual: GEH - 100760

FUNCTIONAL DESCRIPTION:

DS200SHVIG1A is a SCR High Voltage Interface Board manufactured and designed by General Electric as part of the Mark V Series used in the GE Speedtronic Gas turbine Control Systems. The SHVI board provides an interface for signals from the drive’s SCR bridge to the drive’s power supply and instrumentation card and the Power Connect Card (PCCA). The SHVI performs the following functions:

• Converts -500 mV to 500 mV shunt signals to 0 to 500 kHz differential-frequency outputs which are sent to the drive’s power supply card.
• Incorporates hardware jumper-selectable 10: 1 current transformers to provide additional current attenuation capability.
• Provides for attenuation of both line and bridge voltages. Incorporates three indicator lights to provide a visual indication of a blown line filter fuse.

Includes driver circuits for both standard and fast contactors (although fast contactors require either the DMOOCDAA Dual Contact Driver Daughter Card (CDAA) or one or more DS200CDBA Contact Driver Card(s).

BOARD IDENTIFICATION:

The DS2OOSHVZ portion is the base number that identifies the printed wiring board, in this case, the SCR High Voltage Interface Board. The G# identifies a group, which is a variation of a particular board. The r and u digits are alphabetic characters that indicate the board revision level. The r digit reflects a functional change that is not downward compatible. It is essentially a new catalog number. The u digits represent revision levels that are downward compatible with the r revision level.

PROCEDURE FOR REPLACING BOARDS:

• Turn off the power to the drive, then wait a few minutes for the power supply’s capacitors to discharge. Test any electrical circuits before touching them to make sure the power is off.
• Open the drive’s cabinet door to access the printed wiring boards. The SHVI is mounted on the drive’s SCR cell assembly.
• For ribbon cables, place one hand on each side of the cable connector that mates with the board connector. Gently pull the cable connector with both hands.
• Install the new board, ensuring that the board is mounted securely on its standoffs using the six nylon nuts.
• The cables are labeled with the correct comet- tor name, as marked on the board. Reconnect all cables as labeled. Make sure that cables are properly seated at both ends.

HARDWARE ADJUSTMENTS:

The SHVI board includes Berg-type (manually moveable) jumpers, identified by a JP or BIT nomenclature. These jumpers are used for manufacturing tests or customer options. Table 1 lists and defines the SHVI board’s hardware and wire jumpers. Most of the jumper selections have been factory-set. The test data sheets supplied with each controller (in the drive door pocket) indicate these positions. As described previously, ensure that the jumpers on the new board are placed the same as on the old board, unless the instructions indicate otherwise. Refer to Table 1, which lists the default setting first.

WOC has the largest stock of OEM Replacement Parts for the GE Speedtronic Gas Turbine Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What is an SCR High Voltage Interface Board?

An SCR (Silicon-Controlled Rectifier) High Voltage Interface Board is an electronic module designed to control high-voltage loads using an SCR-based switching mechanism. It enables precise control of power delivery to industrial equipment, such as motors, heaters, and high-power rectifiers, by regulating voltage and current flow.

What is the importance of isolation in an SCR High Voltage Interface Board?

Isolation is a crucial feature in an SCR High Voltage Interface Board because it prevents high-voltage circuits from directly interacting with low-voltage control systems. This is typically achieved using optocouplers or transformer-coupled gate drive circuits.

What is the difference between phase-angle control and zero-crossing switching?

Phase-angle control allows precise power regulation by turning on the SCR at different points in the AC cycle, making it ideal for applications requiring variable power output, such as motor speed controllers and heating systems. Zero-crossing switching, on the other hand, activates the SCR only when the AC voltage crosses zero, minimizing electrical noise and reducing stress on the power system.