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ABB TVB3101-1ISC Complete Kit UNITROL Excitation Voltage Transformer Isolated Sensing Module

ABB TVB3101-1ISC complete kit is a turnkey isolated voltage transformer signal conditioning solution customized for ABB UNITROL digital excitation platforms, containing all mounting and wiring accessories required for cabinet installation. The core TVB3101-1ISC transducer adopts high-permeability silicon steel transformer core with wound double-insulated windings, delivering excellent linearity and minimal waveform distortion even under unbalanced generator voltage conditions.

Its primary side connects directly to generator PT secondary AC voltage loops, while the secondary side outputs standardized low-level AC measurement signals to UAD142A01 analog input boards. Ultra-high galvanic isolation separates high-voltage measurement circuits from sensitive low-voltage control electronics, preventing high-voltage breakdown and protecting downstream sampling and main control PCBs during PT faults, ground surges or grid voltage transients. Integrated bidirectional TVS surge suppressors and multi-stage RC low-pass filters suppress rectifier harmonics, switching noise and lightning-induced voltage spikes, stabilizing signal quality for high-precision 16-bit ADC sampling.

The module features a compact standard DIN rail housing structure for fast installation inside UNITROL excitation cabinets, with clearly labeled screw terminal blocks for error-free field wiring. The enclosure and internal circuit boards are treated with full conformal coating to resist dust, condensation, salt mist and weak corrosive gas in coastal, offshore and high-temperature thermal power plants. Internal thermal fuse protection automatically disconnects the primary winding under sustained overvoltage to avoid transformer overheating damage.

Compatible with all mainstream UNITROL excitation control hardware including UNITROL1000 3BHE014557R0003 and UFC765AE102 main control boards, the TVB3101-1ISC ensures consistent voltage measurement accuracy required to comply with global ENTSO-E, VDE and IEC grid codes for low voltage ride-through (FRT) and voltage stability control. The full kit includes original TVB3101-1ISC voltage transformer module, insulated wiring terminal blocks, DIN rail mounting clips, cable ties and printed official operation & maintenance manual, ready for direct cabinet installation without additional auxiliary components.

TVB3101-1ISC

Complete Technical Parameters:

Transformer & Voltage Conversion Performance

Model Designation: TVB3101-1ISC Isolated PT Sensing Transformer
Primary Input Rated Voltage: 100V AC standard generator PT secondary
Secondary Output Rated Signal: Low-level linear AC analog signal matched to UAD142A01 ADC range
Transformation Ratio: Factory fixed precision ratio ±0.05% calibrated
Total Harmonic Distortion (THD): ≤0.1% under rated operating load
Linear Measurement Range: 0–130% rated primary voltage
Insulation Withstand Voltage: 5kV AC between primary and secondary windings
Overvoltage Protection: Built-in TVS clamping + internal thermal fuse cut-off

Electrical & Signal Specifications

Operating Frequency Range: 45Hz ~ 65Hz adaptive for all generator grid frequencies
Input Burden Consumption: Low power draw ≤1.2VA at rated voltage
Output Burden Compatibility: Matched to high-impedance analog input channels
Filter Performance: Integrated low-pass filter suppresses ≥95% of rectifier harmonic noise
Response Speed: Instant voltage tracking ≤1ms for transient grid voltage changes

Mechanical & Environmental Specifications

Mounting Method: Standard 35mm DIN rail clip-on installation
Overall Dimension: 92mm × 64mm × 38mm
Single Module Net Weight: 0.21kg; Full Kit Total Weight: 0.46kg
Continuous Operating Temperature: -25℃ ~ +70℃
Storage Temperature Range: -40℃ ~ +85℃
Ambient Humidity: 5%–95% non-condensing
Internal PCB & Winding Protection: Full anti-moisture conformal coating
EMC Compliance: IEC 61000-6-2 industrial anti-interference standard
Safety Certifications: CE, UL, RoHS certified
MTBF: ≥100,000 hours industrial reliability rating

Compatible Equipment & Matching Software

Applicable Excitation Systems: ABB UNITROL 1000, UNITROL 5000, UNITROL 6000 digital excitation series
Matched Sampling Board: UAD142A01 3BHE012551R0001 analog input acquisition board
Matched Main Control Boards: UFC765AE102, UNITROL1000 3BHE014557R0003 core controllers
Upper DCS Control Platforms: ABB Symphony Plus, AC800M, System 800xA
Official Commissioning Tool: ABB CMT1000 Excitation Parameter Tuning Software

TVB3101-1ISC

Main Features & Competitive Advantages:

Core Features

5kV high isolation between PT high-voltage primary and low-voltage signal secondary, maximum circuit safety protection
Ultra-low THD linear voltage conversion, guarantees high-precision generator terminal voltage sampling for AVR & PSS control
Factory precision ratio calibration (±0.05% accuracy), no on-site ratio adjustment required
Integrated surge suppression, RC harmonic filter and thermal fuse triple overvoltage protection
Compact DIN rail modular design, fast mounting inside standard UNITROL excitation cabinets
Full conformal coated internal windings and PCB, stable operation in high-humidity, salt-mist industrial environments
Wide 45–65Hz frequency adaptability, compatible with all synchronous generator grid frequency standards
Low input power burden, no extra load impact on existing PT measurement circuits
Perfect hardware matching with UAD142A01 analog sampling boards, plug-and-play signal coordination
Unified standard OEM spare part, fully interchangeable with all batches of TVB3101-1ISC units

Key Advantages

All-in-one Complete Kit: Pre-equipped mounting clips, insulated terminals and operation manuals for one-stop installation
High Safety Reliability: Heavy insulation barrier eliminates high-voltage short-circuit risks to expensive control PCBs
Stable Control Performance: Minimal signal distortion ensures accurate voltage regulation and grid oscillation suppression
Low Maintenance Cost: Long-life silicon steel transformer core with no wear parts, minimal routine inspection
Wide Compatibility: Universal fit for all UNITROL excitation cabinets, ideal for power plant renovation and spare stock
Extreme Environment Adaptability: Wide temperature range and anti-corrosion coating suitable for offshore, cold hydropower and tropical thermal plants
Grid Code Compliance: Consistent measurement precision meets ENTSO-E FRT and voltage stability technical requirements
Cabinet Space Optimization: Small compact footprint occupies minimal DIN rail space inside crowded excitation control cabinets

Application Fields:

Conventional Power Generation Industry

Thermal power plant UNITROL 5000/6000 excitation cabinet PT voltage isolation sensing unit
Hydropower & pumped storage generator terminal voltage signal conversion module
Gas turbine, biomass distributed power station excitation system upgrade replacement spare part

New Energy Power Equipment

Onshore & offshore wind turbine synchronous generator excitation front-end PT isolation transformer
Grid-connected energy storage station generator voltage measurement signal conditioning unit

Heavy Industrial Self-Generation Facilities

Steel mill large synchronous motor power factor control excitation voltage sensing module
Underground mine independent power plant excitation cabinet maintenance spare component

Offshore & Oil & Gas Engineering

Offshore drilling platform self-contained generator UNITROL excitation PT isolation unit
Coastal chemical plant anti-salt mist excitation cabinet high-voltage signal safety barrier

Automation Retrofit & Renovation Projects

Direct replacement of aging voltage sensing transformers in old ABB UNITROL excitation cabinets
Upgrade of un-isolated PT signal circuits to high-safety galvanically isolated measurement systems

Marine Onboard Power Systems

Vessel main synchronous generator digital excitation cabinet high-voltage PT signal isolation module

FAQ:

Q1: What components are included in the ABB TVB3101-1ISC full complete set?

A1: The full kit includes original TVB3101-1ISC isolated voltage transformer module, insulated signal terminal blocks, DIN rail mounting clips, cable fixing accessories and printed official operation & commissioning manual, all parts ready for direct cabinet DIN rail installation.

Q2: Which ABB excitation hardware does TVB3101-1ISC match with?

A2: It is specially designed to work with UAD142A01 analog sampling boards, compatible with UNITROL 1000, UNITROL 5000 and UNITROL 6000 excitation systems as well as UFC765AE102 and UNITROL1000 series main control boards.

Q3: What is the insulation withstand voltage of this transformer module?

A3: 5kV AC reinforced galvanic isolation between primary PT high-voltage winding and secondary low-voltage signal winding, providing reliable high-voltage isolation protection for downstream control PCBs.

Q4: What primary voltage does TVB3101-1ISC support?

A4: Standard rated input is 100V AC, matching the secondary output of most generator potential transformers (PT), with a linear measurement range covering 0–130% rated voltage.

Q5: Does the module contain built-in anti-interference and overvoltage protection?

A5: Yes, it integrates multi-stage RC harmonic filters, TVS surge suppression diodes and an internal thermal fuse to protect against grid transients, PT short circuits and sustained overvoltage conditions.

Q6: What installation method does TVB3101-1ISC adopt?

A6: Compact clip-on 35mm standard DIN rail mounting design, fast and convenient installation inside all standard UNITROL excitation control cabinets.

Q7: What is the operating frequency range of this voltage sensing module?

A7: Stable linear conversion from 45Hz to 65Hz, covering all standard power grid frequencies for global generator applications.

Q8: What is the continuous operating temperature range of TVB3101-1ISC?

A8: Continuous stable operation between -25℃ and +70℃; storage temperature ranges from -40℃ ~ +85℃, adapting to all extreme power station operating environments.

Q9: Is the internal winding protected against humid and corrosive environments?

A9: All internal transformer windings and onboard PCB are fully coated with conformal anti-corrosion material to resist dust, condensation and coastal salt mist.

Q10: Can TVB3101-1ISC directly replace old batches of the same model module?

A10: 100% plug-and-play interchangeable. TVB3101-1ISC is unified factory standard version, no ratio calibration or wiring modification required during replacement.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

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To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

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Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.

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