ABB UNS4881B,V1 UNITROL 5000 AVR Unit
Description
| Manufacture | ABB |
| Model | UNS4881B,V1 |
| Ordering information | UNS4881B,V1 |
| Catalog | ABB VFD Spares |
| Description | ABB UNS4881B,V1 UNITROL 5000 AVR Unit |
| Origin | United States (US) |
| HS Code | 85389091 |
| Dimension | 16cm*16cm*12cm |
| Weight | 0.8kg |
Details
ABB UNS4881B,V1 UNITROL 5000 AVR Unit is an automatic voltage regulator, mainly used in the excitation system of medium and large synchronous motors.
It uses microprocessor-based voltage regulation technology, with a voltage regulator with PID filter (automatic operation mode) and an excitation current regulator with PI filter (manual operation mode) to regulate voltage.
It has a variety of limiter functions, including maximum and minimum excitation current limit, maximum stator current (leading/lagging) limit, P/Q underexcitation limit, Volt/Hertz characteristic limit, etc. It adopts a dual channel system with a backup current regulator.
