Heavy-Duty Industrial UPS — EP Three-Input Single-Output Class for Power-System Rooms

Many real-world power-system rooms have three-phase service entrances but single-phase DC and protection loads. The EP three-phase-input, single-phase-output class brings the same heavy-duty industrial engineering as the broader EP family — to the rooms where the supply is three-phase, the load is single-phase, and the environment is harsh.

Built for the industrial rooms where the supply is three-phase and the load is single-phase

When the building delivers three-phase but the protection and SCADA loads are single-phase, the wrong UPS ends up under-using one phase and over-stressing another. The three-phase-input class takes three-phase in and converts it correctly, so the upstream distribution stays balanced and the load sees a clean single-phase sine — all in an industrial-grade cabinet engineered for harsh-environment survival.

Where it makes the difference

• Substation DC battery rooms and protection panels with three-phase supply and single-phase loads.

• Plant-control cabinets and DCS panels running single-phase protection and SCADA loads from three-phase service.

• Power-distribution automation panels with three-phase service and single-phase loads.

• Rail-power and traction substation control panels with three-phase supply and single-phase loads.

• Energy-management and metering rooms with three-phase service and single-phase loads in harsh environments.

What you gain

• An industrial-grade online UPS with IGBT rectification, engineered for three-phase-input single-phase-output power-system rooms.

• Three-phase input handling that keeps the upstream distribution balanced and stable.

• Reinforced mechanical construction and conformal-coated boards for harsh-environment survival.

• Redundant cooling engineered for high ambient temperatures and dust-laden atmospheres.

• Strong overload capability and the inrush tolerance to start small industrial protection loads.

• Wide input tolerance for the slow, dirty mains events common to industrial sites.

• Standard communication interfaces — RS232, RS485, and dry contacts — for plant SCADA integration, with an optional SNMP card.

How the platform works for you

The three-phase-input class uses a robust industrial-grade online double-conversion power stage with IGBT rectification, designed for the slow, steady behaviour that power-system rooms expect from a UPS. The cabinet is engineered for the realities of harsh environments: reinforced steel, conformal-coated electronics, redundant cooling, and predictable service access. The result is a clean single-phase sine output with the inrush tolerance to start small industrial loads — and the robustness to survive the room it lives in.

Service, integration, and lifecycle

The three-phase-input class is supported by the same global field-engineering network as the rest of the EP family, with regional spares and industrial-trained service teams. Integration with plant SCADA, DCS, and BMS is straightforward via standard interfaces, firmware updates are routine, and the system is engineered for control-board upgradeability across generations.

Frequently Asked Questions

• Why three-phase input and single-phase output? Many real-world power-system rooms have three-phase supply but single-phase protection loads; this class matches that topology directly.

• Does this help upstream power quality? Yes — true three-phase input handling keeps the building's distribution balanced.

• Can it start small industrial protection loads? Yes — strong overload capability and inrush tolerance are engineered in.

• What about harsh atmospheres? Reinforced construction, conformal-coated boards, and redundant cooling are engineered for dust, temperature extremes, and conductive pollution.

• What communication options are available? RS232, RS485, dry contacts, and an optional SNMP card.

• Is there a bypass for service? Yes — built-in bypass with manual maintenance bypass for safe service on a live system.

• How is service handled? Regional spares, factory-trained industrial engineers, and predictable maintenance schedules.

• What warranty and service options exist? A standard multi-year warranty with extended and on-site plans available globally.

Information Security and Data Protection

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.

Explore the Heavy-Duty Industrial Family

• Heavy-Duty Industrial UPS — EP Three-Phase Family for Harsh Industrial Environments

• Heavy-Duty Industrial UPS — EP Three-Phase High-Power Tier for the Heaviest Industrial Halls

• Heavy-Duty Industrial UPS — EP Single-Phase Class for Small Power-System Rooms