Setting-up an automatic frequency control station for electric motors of network pumps with the installation of an automatic reserve input cabinet at boiler houses at 193-a Mira Avenue and 151-a Mira Avenue, Chernihiv

Equipment used, specifics of works provided

1. The control cabinet contains a KINCO-K532 programmable logic controller (PLC) kit and a KINCO GL100E touch panel (10.1″ 16770K color TFT 1024*600 high resolution) for displaying operating modes and viewing the event log.
2. The frequency converter cabinets are based on Control Techniques NE300 series frequency converters: NE300-4T0550G/0750P (55/75 kW 380B-440B) or NE300-4T0750G/0900P (75/90 kW 380B-440B).
3. To ensure electromagnetic compatibility with the grid and reduce current consumption fluctuations, Lenze three-phase EZAELN 75kW or 90kW line chokes are used at the FC input.
4. The FC input circuits are protected by an NSX160N 150A circuit breaker (CB) with a MICROLOGIC 2.2M high-speed electronic disconnector.
5. Bypass circuits are provided in the FC to enable direct start of the induction motors (IM) of the IA.
6. The motor protection is carried out using EASYPACT EZC250N 3P3T 25kA 160A and thermal relay.
7. A multifunctional 3-phase power control relay is used to control the order of supply voltage phases alternation.