This exciter board controls generator field current for GE Mark VIe turbine systems. It regulates excitation voltage to maintain stable generator output. Therefore, it ensures precise voltage control for power generation applications.
Physical and Excitation Specifications
The GE IS200EPCTG1A IS200EPCTG1AAA measures 26.0 cm in length and 18.5 cm in width. Moreover, its board weight equals approximately 0.68 kg for rack mounting. A single 64-pin male connector links this board to the VME backplane. Additionally, the board integrates six independent excitation control channels.
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Full Model | IS200EPCTG1A IS200EPCTG1AAA |
| Category | Exciter Board |
| Dimensions (L x W) | 26.0 cm x 18.5 cm (10.24″ x 7.28″) |
| Board Weight | 0.68 kg (1.50 lbs) |
| Primary Interface | 1 x 64-pin Male Connector |
| Excitation Channels | 6 Independent Channels (3 Phase Pairs) |
| Output Signal Type | PWM (Pulse Width Modulated), 0-10 VDC |
| Switching Frequency | 2.5 kHz to 12 kHz (Software Configurable) |
| Maximum Output Current | 100 mA per Channel (Continuous) |
| Field Current Regulation | ±0.5% of Setpoint |
| Voltage Reference Accuracy | ±0.2% of Full Scale |
| On-Board Components | 6 Gate Driver ICs + 12 Protection Diodes + 3 Current Feedback Amplifiers + 1 Temperature Sensor + 2 Voltage Reference ICs |
| Energy Storage | 6 x 220 µF Electrolytic Capacitors (100V) + 2 x 47 µF Tantalum (25V) |
| Operating Voltage | +5 VDC, +15 VDC, -15 VDC, and +24 VDC from Backplane |
| Feedback Inputs | 3 Phase Voltage + 3 Phase Current |
| Isolation Rating | 2500 Vrms (Control to Power Circuits) |
| Operating Temperature | -20°C to +65°C (-4°F to +149°F) |
| Protection Features | Overcurrent + Overvoltage + Undervoltage |
| Status Indicators | 6 Green LEDs (Channel Active) + 1 Green LED (Power) + 1 Red LED (Fault) + 3 Yellow LEDs (Phase Status) |
Excitation Control and Regulation Features
The GE IS200EPCTG1A IS200EPCTG1AAA regulates generator field current with high precision. Specifically, the PWM outputs control external thyristor firing circuits for field excitation. In addition, the board monitors three-phase voltage and current feedback signals continuously. Moreover, the field current regulation accuracy of ±0.5 percent ensures stable generator output. Consequently, this exciter board maintains consistent terminal voltage despite load variations.
PWM Output and Gate Drive Capabilities
Six PWM output channels provide control signals for thyristor bridge firing. For instance, the switching frequency ranges from 2.5 kHz to 12 kHz. In addition, each channel delivers up to 100 mA for driving optocouplers or pulse transformers. Furthermore, the board includes overcurrent and overvoltage protection for safe operation. Thus, the GE IS200EPCTG1A IS200EPCTG1AAA suits brushless or static exciter systems effectively.
Energy Storage and Feedback Processing
This exciter board stores energy using eight onboard capacitors for stable operation. Specifically, six electrolytic capacitors filter field control signals for clean PWM outputs. In addition, two tantalum capacitors provide high-frequency noise suppression for feedback circuits. Furthermore, the board processes voltage and current feedback to close the regulation loop. Thus, this board ensures stable excitation control during transient conditions.
Installation and Diagnostic Indicators
Twelve LED indicators provide operational status at a glance on this board. First, a green Power LED lights when the backplane supply voltages are present. Second, six green Channel Active LEDs illuminate when each PWM channel is enabled. Third, three yellow Phase Status LEDs show the condition of each phase feedback signal. Finally, a red Fault LED indicates overcurrent, overvoltage, or temperature alarms. Additionally, the board features six mounting holes for secure rack attachment. Thus, you can diagnose excitation status instantly without external test equipment.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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