Description
- Model: ABB UNS0119A-P,V101
- Part Number: 3BHE029153R0101
- Brand: ABB (Switzerland)
- Series: UNITROL® 6000 / MEGATROL
- Core Function: High-precision measurement of generator/motor voltage and current
- Product Type: Analog Measurement & Signal Processing Module
- Key Specs: 12-channel capability High-speed sampling V101 Firmware/Hardware variant
UNS0119A-P,V101 3BHE029153R0101
ABB 3BHE029153R0101 UNS0119A-P
ABB 3BHE029153R0101 UNS0119A-P
Key Technical Specifications
- Input Channels: Supports multiple AC/DC voltage and current sensing inputs
- Accuracy: Designed for utility-grade measurement (Class 0.2/0.5 equivalent internal logic)
- Signal Processing: Converts raw transformer signals (PT/CT) into digital data for the USC controller
- Hardware Version: V101 (Specific revision for enhanced signal stability)
- Power Supply: Powered via the internal control rack backplane (24 V DC)
- Isolation: High galvanic isolation between measurement inputs and control logic
- Communication: Integrated into the proprietary high-speed excitation bus
- Coating: Conformal coated for protection against industrial pollutants
- Self-Diagnostics: Continuous monitoring of input signal integrity and board health
Installation & Configuration Guide
Phase 1: Preparation (Pre-Installation)
Estimated time: 20 minutes
⚠️ Safety Warning:
- The UNS0119A-P is connected to Potential Transformers (PTs) and Current Transformers (CTs). Ensure all PT/CT secondary circuits are shorted or isolated.
- Never open-circuit a CT secondary while the primary is energized—this can lead to lethal voltage levels and equipment destruction.
- Verify the excitation system is in “Stop” or “Local” mode to prevent accidental firing during the swap.
Tools Required:
- Calibrated multimeter.
- ESD wrist strap and anti-static mat.
- Small flat-head screwdriver for terminal tensioning (if applicable).
Phase 2: Jumper and Switch Verification
Estimated time: 10 minutes
Step 1: Inspect the Old Board The UNS0119A-P often has hardware jumpers that define the input scale (e.g., 100V vs. 110V or 1A vs. 5A).
- Check the jumper positions on the old board.
- Replicate these exactly on the new 3BHE029153R0101.
Step 2: Version Check Ensure the V101 designation matches. If your current board is an older V100, the V101 is typically the drop-in replacement, but you may need to verify the scaling parameters in the software.
Phase 3: Module Replacement & Calibration
Estimated time: 25 minutes
- Extraction: Remove the retaining screws and gently slide the board out of the rack.
- Insertion: Slide the new module in. If you feel resistance, stop. Align the board with the tracks and try again.
- Synchronization:
- Power up the control rack.
- The “Healthy” LED should illuminate after a few seconds.
- Use the CMT (Commissioning and Maintenance Tool) to check the analog values.
- Zero-Point Check: With the generator at a standstill, verify that all voltage and current readings show “0.00”. If there is an offset, perform a software zero-calibration.
Customer Cases & Industry Applications
Case 1: Combined Cycle Plant Over-Voltage Alarm A gas turbine plant experienced nuisance “Over-Voltage” trips during unit startup. Troubleshooting revealed that the analog-to-digital converter on the UNS0119A-P was drifting due to age. We supplied a New Surplus 3BHE029153R0101 within 48 hours. Once installed, the voltage measurement stabilized, and the unit was able to synchronize to the grid without further incident.
Case 2: Mining Site Excitation Overhaul A remote copper mine using UNITROL 6000 for their large mill motors decided to refresh their measurement electronics during a 5-year overhaul. They chose our New Surplus UNS0119A-P,V101 modules to replace their aging units. Since the modules were New-in-Box, they offered the same reliability as factory-direct parts but at a price point that allowed them to double their on-site spare inventory.
Frequently Asked Questions (FAQ)
Q: What is the “V101” part of the model number? A: This is the version identifier. In ABB excitation systems, V-numbers often denote a specific combination of hardware revision and factory-loaded base firmware. V101 is one of the most common and stable versions for the UNS0119A-P series.
Q: Does this board require a software download? A: While the board has internal firmware, the specific scaling parameters (like your PT/CT ratios) are stored in the main USC controller. When you swap the board, the controller should recognize the new hardware and apply the existing parameters. However, I always recommend a “read-back” via the CMT tool to be 100% sure.
Q: Why are measurement boards like this so critical? A: In an excitation system, the measurement board is the “eyes” of the controller. If the UNS0119A-P reports a voltage lower than reality, the controller will over-excite the generator, potentially leading to a catastrophic winding failure. This is why we only sell New Surplus, never “refurbished” measurement boards.
Q: Can I use this board for 50Hz and 60Hz systems? A: Yes. The UNS0119A-P is designed to be frequency-independent within the standard industrial range (45Hz – 66Hz). The frequency is handled by the sampling logic and the master controller configuration.
Q: How do you verify the quality of a “Surplus” measurement board? A: Measurement boards are sensitive. We perform a physical inspection of the electrolytic capacitors for any signs of swelling and check the conformal coating for integrity. We also verify the resistance of the input channels to ensure no transformers have been stressed. You get a board that is ready for precision duty.
