ABB Stotz S&J Softstarter PSTX250-690-70

Manufacturer: ABB Stotz S&J
Designation: Softstarter 220 kW 690 V
Type: PSTX250-690-70
Rated operational current Ie at 40 °C ambient temperature: 250 A
Rated operational voltage Ue: 208-690 V
Rated power for three-phase motor, standard connection, at 230 V: 75 kW
Rated power for three-phase motor, standard connection, at 400 V: 132 kW
Rated power for three-phase motor, star-delta connection, at 230 V: 132 kW
Rated power for three-phase motor, star-delta connection, at 400 V: 220 kW
Function: Reversing starter
Internal bypass: Yes
With display: Yes
Torque control: Yes
Rated ambient temperature without derating: 40 °C
Rated control supply voltage Us at AC 50 Hz: 100-250 V
Rated control supply voltage Us at AC 60 Hz: 100-250 V
Type of voltage for actuation: AC
Integrated motor overload protection: Yes
Tripping class: Adjustable
Protection class (IP): IP00
Protection class (NEMA): 1

The PSTX softstarters provide complete motor protection in a single device and operate effectively even under load or network irregularities. Motor protection is ensured through PT-100, earth fault, overvoltage, and undervoltage protection, among other functions. Various start, stop, and torque adjustment options allow for precise adaptations to specific applications. For example, pump cleaning can alternately reverse the pump flow to free the pump impeller from contamination. The slow forward and reverse jog operation increases flexibility, such as when operating conveyors and cranes. An integrated bypass ensures energy efficiency by reducing heat generation during operation. The display and menu navigation are user-friendly.