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overview：
GE DS200SHVMG1AFE is an SCR high voltage M-Frame interface board used in the Mark V Speedtronic system, and is primarily used to control and monitor the high voltage interface between the power supply and the SCR (Silicon Controlled Rectifier) system in industrial gas turbine applications. The board provides critical control and protection for the power electronics that regulate the turbine exciter and drive systems.
Fuctions & Features:
- Signal Conversion: The GE DS200SHVMG1AFE converts -500 mV to +500 mV shunt signals to 0 to 500 kHz differential frequency outputs for accurate signal transmission to the power board.
- Current Attenuation: The GE DS200SHVMG1AFE integrates a jumper-selectable 10:1 current transformer (CT) for current attenuation to manage AC line, motor armature, and SCR bridge voltages to protect the system from excessive current.
- Isolation Circuit: The GE DS200SHVMG1AFE DC Bridge Shunt Isolator circuit uses a voltage-controlled oscillator (VCO) to convert the -500 mV to +500 mV shunt signal from the bridge to an output that is fed to the DCFB board. The isolator circuit floats to the bridge potential of the dc + and dc - voltages to ensure proper signal processing.
- Overcurrent Protection: If the main line ACCT secondary current exceeds 144 mA, the GE DS200SHVMG1AFE board provides attenuation for the AC line current, protecting system components from overcurrent.
Specification：
|
Parameter |
Details |
|
Product Model |
DS200SHVMG1AFE |
|
Product Type |
SCR High Voltage M - Frame Interface Board |
|
Electrical Parameters - Input Voltage Range |
Stable handling of a wide range of input voltages from - 500 mV to + 500 mV |
|
Electrical Parameters - Number of Relay Channels |
12 relay channels |
|
Electrical Parameters - Power Supply Voltage |
Powered by 28 V DC power supply |
|
Electrical Parameters - Output Frequency Range |
Output frequency range is 0 to 500 kHz |
|
Electrical Parameters - Current Attenuation |
Jumper - selectable 10:1 current attenuation function |
|
Electrical Parameters - AC Line Voltage Attenuation Bypass |
Capable of handling 240 - 600 V AC line voltage |
|
Dimensions |
Height 15.9 cm, Width 17.8 cm |
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