Products Description
ABB UN1024c-P Rotor Current Limiter HEIR318629R1
| Model Number |
HEIR318629R1 |
| Place of Origin |
Sweden |
| Dimension/Weight |
3kg |
| Condition |
New and Original |
| Warranty |
1 year |
| Shipping term |
DHL Fedex UPS |
| Payment |
TT |
| Delivery time |
3-5 days |
| Service |
24 Hours Online Service |
Key Parameters
Core Features & Advantages
-
Critical Rotor Protection: The module's standout feature is its ability to enforce both maximum and minimum field current limits . This protects the rotor winding from overheating due to excessive current and prevents damage from under-excitation, ensuring the generator operates safely within its design envelope .
-
Part of a Comprehensive Protection Suite: The rotor current limiter works within the broader UNITROL 6000 system, which provides extensive protective functions for the generator, including overcurrent protection (instantaneous and inverse time), stator current limits adjusted for cooling temperature, P/Q under-excitation limits, and Volt/Hertz protection .
-
Integrated into UNITROL 6000 Platform: It is specifically designed for ABB's UNITROL® 6000 excitation system, the latest generation of static excitation systems for synchronous generators and motors . The system is known for high performance, reliability, and ease of integration into modern power plants.
Typical Applications
The UN1024c-P rotor current limiter is essential in excitation control systems for power generation, used for:
-
Generator Excitation: Protecting large synchronous generators in thermal, nuclear, and hydro power plants
-
Motor Protection: Ensuring safe operation of large synchronous motors driving compressors, pumps, and mills in industrial applications
-
Grid Stability: Working in conjunction with other limiters to help maintain grid voltage and stability by preventing overexcitation and underexcitation events
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the UN1024c-P rotor current limiter?
A: Its core function is to monitor and enforce maximum and minimum field (rotor) current limits, protecting the synchronous generator or motor rotor windings from thermal overload due to excessive current, and preventing damage from under-excitation .
Q2: In which ABB excitation system platform is this module used?
A: It is a dedicated module within the ABB UNITROL® 6000 excitation system series, the latest generation of static and indirect excitation systems for synchronous machines .
Q3: What protective functions does the UNITROL 6000 system provide?
A: The system provides comprehensive generator protection functions, all configurable on three action levels (alarm, redundant switching, or excitation trip). Key functions include overcurrent protection (instantaneous and inverse time), Volt/Hertz (V/Hz) protection, loss of field protection, rotor temperature monitoring, and thyristor conduction monitoring .
Q4: Does the UN1024c-P support redundant configurations?
A: As part of the UNITROL 6000 system, rotor current limiters function within architectures supporting single-channel, dual-channel, and optional backup channel configurations for critical applications. Both the Medium and X-power versions support optional backup channels .
Q5: What are the typical applications for this module?
A: It is used for protecting large synchronous generators in thermal, nuclear, and hydro power plants, and large synchronous motors driving compressors, pumps, and mills in industrial applications such as steel mills, pulp and paper, chemical plants, and refineries .
Q6: What are the key electrical specifications of the UNITROL 6000 X-power system?
A: The X-power version covers DC currents from 1,800 A to 12,000 A. The power converter UNL14300 supports AC supply voltages up to 1,500 V and is suitable for the largest power generation units .
Q7: What certifications does the UNITROL 6000 system hold?
A: The system is designed to comply with major grid codes and safety standards. The new UNITROL 6000 Nuclear version carries all relevant certifications for nuclear power plants, while the standard systems meet international and local standards .
Recommended Models & System Components
The UN1024c-P rotor current limiter is part of the broader UNITROL 6000 platform. The following models and components are recommended for building a complete excitation control system :
