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STS Series 375/750kW

Static Transfer Switch

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STS Series 375/750kW

The  Static  Transfer  Switch  (STS)  is  a  cabinet-based,  high-performance  switching  solution  designed  for  commercial  and industrial energy storage systems. Fully compatible with GoodWe ET Series 75-100kW and ETR Series 50-125kW, it enables  UPS-level  on-  and  off-grid  switching  with  ultra-fast  response  time.  The  STS  provides  precise  control  of  hybrid  inverters,  enabling  seamless  transitions  between  grid-tied  and  off-grid  modes  so  that,  in  the  event  of  a  grid  outage,  critical  loads  are  continuously  powered  by  solar  energy  or  batteries and smoothly reconnected to the grid once power is  restored.  Featuring  a  smart  configurable  port,  the  STS  integrates  PV,  energy  storage  and  diesel  generators  into  one  coordinated  system,  delivering  a  flexible,  resilient  and  cost-optimized  microgrid  solution.  As  a  scalable  cabinet  solution,  it  supports  parallel  inverter  systems  and  large  inductive  loads  such  as  motors  and  heat  pumps,  ensuring  reliable operation across diverse C&I applications.

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UPS-level on/off-grid switching with ultra-fast response

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Flexible microgrid integration with PV, storage and diesel generators

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375 kW / 750 kW scalable design for optimized system sizing

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Outdoor-ready design with stable operation across wide temperature conditions

STS Series 375/750kW

OVERVIEW

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Model

GW750K-STS-A-G10

Nominal Voltage (V)

127 / 220, 220 / 380, 230 / 400, 240 / 415, 3L / N / PE

Voltage Range (V)

114 ~ 280

Max. Apparent Power on Grid Side (kVA)

750@400V (400@220V)

Ingress Protection Rating

IP54

Model

GW375K-STS-A-G10

Nominal Voltage (V)

127 / 220, 220 / 380, 230 / 400, 240 / 415, 3L / N / PE

Voltage Range (V)

114 ~ 280

Max. Apparent Power on Grid Side (kVA)

375@400V (200@220V)

Ingress Protection Rating

IP54

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