DECS-200N-C1 Excitation System Commissioning Procedure
Pre-Energization Checks
Hazard Prevention:
- Isolate generator terminals (rack-out circuit breaker)
- Ground field windings with 35mm² cable
- Verify dielectric strength (5kV AC for 1min @ bushings)
Validation Steps:
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1. CTR/VTR Settings:
• Field CT: 5000/5A (Verify burden ≤0.1VA)
• PT Ratio: 13.8kV/120V
2. Insulation Resistance:
- Control circuits: >100MΩ @ 500VDC
- Power circuits: >500MΩ @ 2.5kVDC
3. Ground Continuity: <0.1Ω (terminal X5-17 to station grid)
Hardware Configuration
DIP Switch Settings (Front Panel):
| SW Group | Position | Function |
|---|---|---|
| SW1 | 1-ON | Auto Voltage Reg |
| 4-ON | CANbus enabled | |
| SW2 | 2-OFF | Breaker sync disable |
Terminal Wiring:
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X3-1 → Generator PT (Ph-A) [2.5mm² shielded]
X3-11 → Field +ve [35mm², 90°C rated]
X5-9 → Emergency trip input [Dry contact, 24VDC]
Power-Up Sequence
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graph LR
A[Control Power ON] --> B[Initialize HMI]
B --> C{Self-Test Result}
C -->|PASS| D[Enable DC supply]
C -->|FAIL| E[Diagnostic Code 0xE7]
D --> F[Pre-charge resistor bypass]
F --> G[Field breaker close]
Critical Timings:
- DC link pre-charge: 3.2s ±0.5s
- HMI boot time: ≤15s
Calibration Procedure
1. Voltage Matching
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a. Set DECS-200N to MANUAL mode
b. Adjust FVR (Field Voltage Reg) until:
Gen Volts = Grid Volts ± 0.25%
c. Engage sync check relay (59G)
2. PID Tuning (Auto Mode)
| Parameter | Default | Optimization Range |
|---|---|---|
| Kp | 2.5 | 1.8-3.2 |
| Ti | 4.0s | 3.5-8.0s |
| Stab. Gain | 0.35 | 0.2-0.5 |
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*Note: Use step response test (2% ΔVref) to achieve:
- Rise time <0.5s
- Overshoot ≤5%*
DECS-200N-C1 BASLER ELECTRIC PDF
DECS-200N-C1 BASLER ELECTRIC l
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