Goodwe STS200-80-10 Static Transfer Switch (For GW50K-ET Hybrid Inverter)

The Goodwe STS200-80-10 is a high-performance Static Transfer Switch designed to work with the Goodwe 50kW ET-series hybrid inverter. It enables seamless switching between grid, generator and inverter power, ensuring stable backup power for commercial and industrial applications. When the grid fails, it instantly transfers loads to inverter/battery power, and when the grid returns, it reconnects smoothly without interruption.

What the Goodwe STS200-80-10 Does

Reliable Automatic Power Switching

• Automatically switches between grid-connected and off-grid modes

• Maintains power supply to essential or critical loads

• Smooth transition back to grid when power restores

Supports Large Three-Phase Loads

• Suitable for pumps, compressors, motors and heat pumps

• Handles high surge and continuous loads

• Designed for commercial and industrial power systems

Generator Integration

• Supports generator input for combined backup capacity

• Ideal for farms, factories, warehouses and large businesses

• Ensures uninterrupted operation even with grid instability

Electrical Specifications

Voltage & Frequency

• Nominal output voltage: 380 / 400V (3-phase + N + PE)

• Output voltage range: 176 – 276V

• Frequency: 50 / 60Hz

• Frequency range: 45 – 65Hz

Inverter Side Capacity

• Nominal apparent power: 50,000 VA

• Max apparent power: 55,000 VA (off-grid)

• Nominal current: 72.5A

• Max current: 75.8A

Grid Side Capacity

• Nominal apparent power: 50,000 VA

• Max apparent power: 50,000 VA

• Nominal current: 72.5A

• Max current: 75.8A

Backup Output Capacity

• Nominal apparent power: 50,000 VA

• Max backup power (no grid): 55,000 VA

• Max backup with grid present: 138,000 VA

• Max backup current: 83.3A, up to 200A when grid is available

Generator Input Capacity

• Nominal apparent power: 50,000 VA

• Max apparent power: 55,000 VA

• Max generator-side current: 83.3A

Switching Performance

Fast Transfer Switching

• Switch time: <10 ms

• Ensures no interruption to sensitive equipment

• Suitable for essential commercial circuits

Relay Specifications

• AC-side relay rating: 200A

• Generator-side relay rating: 90A

Design & Installation

Physical Specifications

• Weight: 17.5 kg

• Dimensions: 510 × 425 × 156 mm

• Mounting method: Wall mounted

Durability & Protection

• Cooling: Smart fan cooling

• Operating temperature: -35°C to +60°C

• Max operating altitude: 4000 m

• Ingress protection: IP65 (outdoor rated)

• Communication with inverter: RS485

Certification & Compliance

Safety & EMC Standards

• IEC 62109-1 / 62109-2

• EN 61000-6-1, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4

Why You Need the STS200-80-10

Perfect for Large Backup Systems

• Required to activate backup mode on the Goodwe 50kW ET Hybrid Inverter

• Maintains power for high-demand three-phase loads

• Stabilizes transitions between grid, generator and inverter power

Ideal For

• Farms

• Warehouses

• Factories

• Industrial buildings

• Large commercial solar systems

• Guesthouses, lodges & multi-building properties

FAQ Section

What does the STS200-80-10 do?

It automatically switches between grid, inverter and generator power, ensuring uninterrupted supply for large three-phase systems.

Do I need the STS for the Goodwe 50kW Hybrid inverter?

Yes. The STS is required to enable backup mode and seamless off-grid switching on the GW50K-ET inverter.

Can this STS work with generators?

Yes. It supports generator integration, allowing charging and backup support during outages.

How fast does it switch during a power failure?

It switches in under 10 milliseconds, fast enough to maintain power to sensitive loads.

Is it suitable for outdoor installation?

Yes. With an IP65 rating, it is designed for outdoor or indoor wall-mounted installation.

What size systems is it ideal for?

It is perfect for large homes, farms, factories, warehouses, lodges and commercial solar installations paired with the Goodwe 50kW inverter.