STS

ESTS250/500-M

Seamless Switching
- <20ms ultra-fast on/off-grid switching ensures uninterrupted power supply to loads
- Supports rapid isolation from the grid and switching of feed paths in microgrid operation
- High-reliability backup design ensures continuous operation of critical loads
High Efficiency & Reliability
- System efficiency >99.5%, reducing energy losses
- Available in dual power ratings of 250kVA and 500kVA
- Intelligent air cooling adapts to various working conditions for stable operation
Smart Communication
- Standard RS485 communication interface for easy system integration
- Supports expansion via multiple communication protocols such as CAN
- Enables intelligent O&M and remote monitoring of power stations
Easy O&M
- Front-access design for simplified installation and maintenance
- Suitable for altitudes up to 4000m and a wide temperature range of -25°C to 55°C
- Compact size and lightweight structure for flexible deployment

Specifications

Electrical Parameters

Model No.		ESTS250-M	ESTS500-M
Grid Port Power	kVA	250	500
Grid Port Rated Current	A	361	722
Load Port Power	kVA	250	500
Rated Voltage	V	400
Grid-side Voltage Range		±15%
Rated Frequency	Hz	50/60
On-grid/Off-grid Switching Time	ms	< 20
Efficiency		> 99.5%
Auxiliary Power Consumption	W	60	100

Mechanical Parameters

Model No.		ESTS250-M	ESTS500-M
Dimensions (W × H × D)		440 × 130 × 520 mm	440 × 200 × 500 mm
Weight	kg	22	39.6

Environmental Parameters

Altitude		4000 m (derating above 2000 m, 1% derating per additional 100 m)
Operating Temperature		-25 ℃ ~ 55 ℃ (derating above 45 ℃)
Storage Temperature		-45 ℃ ~ 70 ℃
Humidity		0%RH ~ 95%RH, non-condensing
Cooling Method		Smart air cooling
Protection Rating		IP20

Interfaces

Version Information

Version

V1.0