This bridge power board provides high-current gate drive power for GE Mark VIe exciter systems. It supplies isolated DC voltages to thyristor gate driver circuits. Therefore, it enables reliable firing of power semiconductors in generator excitation bridges.
Physical and Power Specifications
The GE IS200BPIIH1A IS200BPIIH1AAA measures 26.0 cm in length and 18.5 cm in width. Moreover, its board weight equals approximately 0.70 kg for rack mounting. A single 64-pin male connector links this board to the VME backplane. Additionally, the board provides six independent isolated power outputs.
| Parameter | Specification |
|---|---|
| Brand | General Electric (GE) |
| Full Model | IS200BPIIH1A IS200BPIIH1AAA |
| Category | Bridge Power Board |
| Dimensions (L x W) | 26.0 cm x 18.5 cm (10.24″ x 7.28″) |
| Board Weight | 0.70 kg (1.54 lbs) |
| Primary Interface | 1 x 64-pin Male Connector |
| Power Output Channels | 6 Independent Isolated Outputs |
| Input Voltage (Backplane) | +24 VDC and +5 VDC |
| Output Voltage per Channel | +15 VDC / -8 VDC (Gate Drive) |
| Output Current per Channel | 2 A (Peak), 0.5 A (Continuous) |
| Output Power per Channel | 15 W (Maximum) |
| Isolation Voltage | 3500 Vrms (Output to Input) |
| Switching Frequency | 100 kHz (Internal DC-DC Converter) |
| Efficiency | > 85% |
| Short Circuit Protection | Yes (Per Channel) |
| Overcurrent Protection | Yes (Foldback per Channel) |
| On-Board Components | 6 DC-DC Converters + 6 Isolation Transformers + 12 Output Capacitors + 12 Rectifier Diodes + 6 PWM Controller ICs + 12 Protection Diodes + 1 Voltage Regulator + 1 EMI Filter + 6 LED Drivers |
| Energy Storage | 6 x 220 µF Electrolytic Capacitors (100V) + 3 x 47 µF Tantalum (25V) |
| Operating Voltage | +5 VDC and +24 VDC from Backplane |
| Power Consumption | 8 W (No Load), 30 W (Full Load) |
| Operating Temperature | -20°C to +65°C (-4°F to +149°F) |
| Status Indicators | 6 Green LEDs (Output OK per Channel) + 1 Green LED (Power) + 1 Red LED (Fault) |
Bridge Power Output Features
The GE IS200BPIIH1A IS200BPIIH1AAA generates six isolated gate drive power supplies. Specifically, each output provides +15 VDC and -8 VDC for thyristor gate drivers. In addition, the 3500 Vrms isolation protects the backplane from power circuit faults. Moreover, each channel operates independently with its own DC-DC converter. Furthermore, the switching frequency of 100 kHz allows small transformer sizes. Consequently, this bridge power board delivers clean, isolated power for exciter gate drivers.
Output Protection and Regulation
Each power output channel includes comprehensive protection for reliable operation. For instance, short circuit protection shuts down the channel during output faults. In addition, overcurrent protection uses foldback limiting to prevent damage. Moreover, the DC-DC converters maintain output regulation within ±5 percent under load. Furthermore, each channel has a green LED that lights when the output is within specification. Thus, the GE IS200BPIIH1A IS200BPIIH1AAA provides safe, regulated gate drive power for Mark VIe exciters.
Energy Storage and Power Integrity
This bridge power board stores significant energy using nine onboard capacitors. Specifically, six high-voltage capacitors filter the isolated outputs for stable gate drive. In addition, three tantalum capacitors provide high-frequency noise suppression for the PWM controllers. Moreover, these capacitors maintain output voltage during load transients. Furthermore, the hold-up capacitors keep outputs active for 5 milliseconds during backplane dips. Therefore, this board ensures stable gate drive power during momentary power interruptions.
Installation and Diagnostic Indicators
Eight 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 Output OK LEDs illuminate when each output channel produces correct voltages. Finally, a red Fault LED indicates short circuits, overcurrent, or internal converter failures. Additionally, the board features six mounting holes for secure rack attachment. Thus, you can monitor bridge power status instantly without external test equipment.
Details
| Weight | 0.1 kg |
|---|---|
| Dimensions | 25 × 108 × 127 mm |
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