Power-system rooms come in many shapes, and many of them are tight. The S-series built-in tier delivers industrial-frequency online UPS protection with a true output isolation transformer — in a compact, in-cabinet form factor engineered to live inside the panel that powersystem teams already trust. It is the right answer for protection rooms, substation DC rooms, and plant-control panels where the UPS belongs in the cabinet, not next to it.
The built-in tier is engineered to install inside standard power-system cabinets, with front-accessible terminations and predictable thermal behaviour. The industrial-frequency online topology with a true output isolation transformer delivers the galvanic isolation and inrush tolerance the rooms expect — and the compact footprint respects the realities of crowded protection panels.
Substation DC battery rooms and protection panels with built-in UPS slots.
Plant-control cabinets and DCS panels running protection and SCADA loads.
Power-distribution automation panels with built-in UPS provisions.
Rail-power and traction substation control panels.
Energy-management rooms and metering rooms where the UPS lives inside the cabinet.
An industrial-frequency online UPS with a true output isolation transformer, sized to install inside a power-system cabinet.
Front-accessible terminations and engineered thermal behaviour for in-cabinet operation.
DSP-based digital control with strong overload capability and inrush tolerance.
Comprehensive self-diagnostics and a clear local display for the panel team.
Standard communication interfaces — RS232, RS485, and dry contacts — for plant SCADA integration.
An optional SNMP card for higher-level monitoring stacks.
Compliance with industry-standard design codes for power-system environments.
The built-in tier uses the same industrial-frequency online double-conversion platform as the rest of the S-series family, with a true output isolation transformer and a chassis engineered for in-cabinet thermal and service realities. The result is a clean sine output with galvanic isolation, predictable inrush behaviour, and a service model that respects the way power-system panels are built and serviced.
Built-in units are supported by the same global field-engineering network as the SDL line, with regional spares and power-system-trained service teams. Integration with plant SCADA, DCS, and BMS is straightforward via standard interfaces, firmware updates are routine, and the chassis is engineered for control-board upgradeability across generations.
Why built-in rather than external? When the power-system cabinet already has a slot for the UPS, a built-in tier respects the cabinet architecture and simplifies the panel build.
Does it provide true galvanic isolation? Yes — the output isolation transformer separates the load from the upstream distribution.
Can it start heavy protection loads? Yes — strong overload capability and inrush tolerance are engineered in.
What communication options are available? RS232, RS485, dry contacts, and an optional SNMP card.
Is there a bypass for service? Yes — a maintenance bypass is provided for safe service on a live system.
How is service handled? Regional spares, factory-trained power-system engineers, and predictable maintenance schedules.
Is it future-proof? Modular firmware and a field-replaceable control board extend useful life across generations.
What warranty and service options exist? A standard multi-year warranty with extended and on-site plans.
Role-based access, audit-friendly event logs, and encrypted remote communication where supported by your plant SCADA or management platform protect operational data. Telemetry stays inside your plant network boundary by design.
Industrial-Frequency Power UPS — SDL Single-Phase Line for Power Plants and Substations
Industrial-Frequency Power UPS — S-Series Single-Phase External Wall-Mount for Power-System Rooms
Industrial-Frequency Power UPS — S-Series Three-Input Single-Output Built-In for Power-System Rooms
Contact: Frank Zhang
Phone: +86-135 5688 8641
Email: frank@upsboss.com
Add: Jufeng Road, Guangming Street, Guangming District, Shenzhen City, Guangdong Province, China
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