Industrial UPS | 30kVA / 24kW | 3 Phase | 480V Wye Systems | Support VRLA battery or LiFePO4 battery
In modern industrial environments, stable and uninterrupted power is mission-critical. Prostar ET30K HV 3 phase 30kVA power backup UPS is engineered to deliver robust power protection. It provides high-performance power protection for factories, heavy machinery, and critical infrastructure.
Designed with a 480V input/output configuration and built-in isolation transformer, this UPS ensures maximum reliability under harsh electrical conditions.

A 30kVA power backup UPS is a high-capacity uninterruptible power supply. It is designed to provide continuous power during outages. It also functions during voltage fluctuations or grid instability.
The industrial UPS system is widely used in:
When specifying power protection for industrial applications, capacity and topology are non-negotiable. A 30kVA power backup UPS occupies a critical performance tier. It is substantial enough to power entire workshop sections, HVAC control systems, or precision CNC machinery. It is also efficient enough to integrate into existing electrical infrastructures without excessive cooling demands.
The ET30K HV stands out by operating at a native 480V input and output. This is the standard for heavy industrial equipment in North America and other global markets. By maintaining voltage consistency at this level, the unit removes the necessity for costly step-down transformers. These transformers introduce failure points and decrease overall system efficiency.
The ET30K HV integrates isolation transformer, delivering:
This UPS operates with 3 phase 480V UPS system architecture, making it ideal for industrial loads:
Unlike conventional UPS systems, the ET30K HV supports:
Features an LCD display for easy monitoring and management of power status and system performance.
This 30kva power backup ups is engineered to withstand the challenges of industrial settings. It handles high loads and continuous operation. It also meets sensitive equipment requirements. Its rugged design and advanced cooling system ensure stable performance even under heavy usage.
ET30K HV UPS provides consistent and clean power output, making it ideal for heavy‑duty applications. Its true online double‑conversion technology guarantees maximum protection against surges, spikes, harmonics, and electrical noise.

| Feature | Specification |
| Power Capacity | 30kVA / 24kW |
| Phase | 3 Phase In / 3 Phase Out |
| Input/Output Voltage | 480VAC (High Voltage Range) |
| Topology | Online Double Conversion |
| Transformer | Built-in Isolation Transformer |
| Load Capability | 100% Unbalanced Load |
| Efficiency | Up to 96% in ECO Mode |
| Battery Type | External Battery Bank |
| Communication | RS232 / RS485 / USB / Dry Contacts / SNMP (Optional) |
| Application | Industrial, Medical, Server Rooms |



The ET30K HV 30kVA power backup UPS is optimized for demanding industrial scenarios:
Ensures uninterrupted operation of automated machinery and reduces downtime losses.
Provides stable voltage to precision equipment, preventing errors and damage.
Delivers reliable backup power in remote and harsh environments.
Supports essential systems such as power plants, transportation hubs, and utilities.
Its high capacity, 3-phase design, and ability to handle heavy and unbalanced loads make it ideal for industrial applications.
A transformer provides electrical isolation, improves safety, and enhances resistance to voltage disturbances.
Yes, the ET30K HV supports 100% unbalanced loads without performance degradation.
No. This model is optimized for industrial environments, not IT or server applications.
Runtime depends on the battery configuration. The system supports scalable battery packs to meet different backup duration needs.
Contact us today to get:
Upgrade your facility with the ET30K HV industrial UPS system and ensure uninterrupted productivity.
| Model | ET30K HV |
| Capacity | 30KVA/24KW |
| Topology | Double conversion online |
| Noise | < 65dB from side 1M |
| Dimension(WxDxH mm) | 870x700x1300 |
| Weight(Kgs) | 573 |
| INPUT | |
| Nominal Voltage | 480Vac, 3P+N+PE |
| Voltage Range | 384 – 576Vac |
| Rated Frequency | 50Hz/60Hz (Automatically) |
| Frequency Range | 40Hz – 70Hz |
| Power Factor | ≥0.95 |
| Input Current Limit | 1.25 x rated input current (settable from 0.1 to 1.25) |
| THDi | < 3% at full load |
| OUTPUT | |
| Output Rated Voltage | 480Vac, 208Vac/220Vac |
| Voltage Regulation | ± 1% |
| Frequency | Mains mode: synchronized with bypass input |
| 50Hz/60Hz±0.01%(By Battery) | |
| THDu | <2% at 100% liner load, <5% at 100% non-liner load |
| Overload Capacity | 105-110%: 60 mins, 110-125%: 10 mins, 125-150%: 1 min, >150%: 200ms |
| Crest Factor | 3:1 |
| Wave Form | Pure sine wave |
| Transfer Time | 0ms |
| ECO MODE | |
| Bypass Output Voltage Range | Upper limit: default 5% (adjustable 5%/10%/15%) |
| Lower limit: default 5% (adjustable 5%/10%/15%) | |
| Bypass Output Frequency Range | Default +/-2Hz (adjustable +/-1Hz, +/-2Hz, +/-3Hz) |
| EFFICIENCY | |
| Efficiency at full load(AC-AC) | > 93% |
| Efficiency at ECO Mode | > 98% |
| BATTERY | |
| Battery Type | Support VRLA battery or LiFePO4 battery option |
| Battery Voltage | 360Vdc default, 336-384VDC |
| Battery Charging Currency | Default 0.2C, adjustable from 0C to 5C depending on battery specification and configuration |
| SYSTEM | |
| Protection | Input over-voltage, under-voltage; output overload, shortcircuit; Inverter over-temperature; Battery under-voltage,over-voltage, fan failure |
| IP Level | IP31 |
| Parallel Number | Up to 8 units |
| Cooling Method | Forced air cooling (fans) |
| Display | 7-inch color LCD touch screen |
| Audible Alarm | Audible and visual alarms prioritized by fault severity |
| ENVIRONMENT | |
| Operating Temperature | 0℃ to 40℃ |
| Storage Temperature | -20℃ to 55℃ |
| Humidity | 0~95% (non-condensing) |
| Altitude | <1000m (with increase of 100m,it will reduce output of 1%) |
| COMMUNICATION | |
| Communication Interface | RS232,RS485, USB, Dry contact, EPO (option: battery temperature compensation) |
| Intelligent Slot | Support SNMP card / web interface for advanced remote monitoring, management, and network integration |