ET20K HV heavy equipment ups with transformer 20kva 3 phase
Industrial UPS | 20kVA / 16kW | 3 Phase | 480V Wye Systems | Support VRLA battery or LiFePO4 battery
Prostar ET20K HV UPS with transformer is a 20kVA 3-phase industrial uninterruptible power supply designed for heavy equipment. It integrates an isolation transformer. This ensures superior electrical isolation. It also enhances safety and provides a stable voltage output. These features make it ideal for harsh industrial environments, unbalanced loads, and sensitive machinery.
This 20kVA, 3-phase uninterruptible power supply integrates a robust isolation transformer. It offers unparalleled reliability for industrial environments. Voltage fluctuations, surges, and outages can lead to costly downtime.
What Is a UPS with Transformer?
A UPS with transformer is an advanced power protection system that includes a built-in isolation transformer. Unlike transformerless UPS systems, this design provides:
- Galvanic isolation between input and output
- Superior surge and noise suppression
- Better compatibility with industrial loads
- Enhanced reliability in unstable grid conditions
For heavy-duty applications, a transformer-based UPS is not optional—it is essential.
Key Features of Heavy Industrial UPS
High Capacity
Three-Phase Power
Advanced Battery Management
Incorporates intelligent battery management systems to extend the lifespan and efficiency of the batteries. This feature can include automatic testing and status monitoring.
Redundancy Features
Allows for parallel operation with additional units for increased capacity and redundancy, ensuring a backup in case of a unit failure.
Comprehensive Protection Mechanisms
Features such as overvoltage protection, short-circuit protection, and surge protection ensure the safety of connected devices.
Why Choose a UPS with Transformer for Industrial Use?
Electrical Isolation for Maximum Safety
The built-in transformer provides complete electrical isolation, protecting equipment from:
- Voltage spikes
- Harmonic distortion
- Ground loop interference
This is critical in industries like manufacturing, oil & gas, and automation.
Superior Performance with Heavy Equipment
Heavy equipment such as:
- CNC machines
- Motors and compressors
- Robotic production lines
require high inrush current tolerance and stable voltage. The ET20K HV heavy load UPS ensures:
- Strong overload capacity
- Stable output under dynamic loads
- Zero transfer time
100% Unbalanced Load Capability
Unlike standard UPS systems, this UPS with transformer supports:
- Fully unbalanced three-phase loads
- Independent phase regulation
- Stable output even in asymmetric conditions
This is essential for industrial environments where loads are rarely balanced.
Robust Design for Harsh Environments
The ET20K HV industrial UPS 20kVA is built for:
- High temperature conditions
- Dust and vibration environments
- Continuous 24/7 operation
Its transformer-based architecture enhances durability compared to transformerless designs.
UPS with Transformer Diagram
The ET20K HV heavy equipment UPS with transformer is engineered for mission-critical industrial operations requiring stable, clean, and continuous power.
Technical Specifications
| Feature | Specification |
| Power Capacity | 20kVA / 16kW |
| 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 |
LCD Display Show
Typical Applications
The ET20K HV is widely used in:
- Manufacturing plants (CNC, assembly lines)
- Oil & gas facilities
- Medical equipment systems
- Automation and robotics
- Critical infrastructure projects
UPS with Transformer vs Transformerless UPS
| Criteria | UPS with Transformer | Transformerless UPS |
|---|---|---|
| Isolation | Yes | No |
| Load Compatibility | Excellent | Moderate |
| Noise Suppression | High | Medium |
| Size | Larger | Compact |
| Industrial Suitability | Ideal | Limited |
FAQ
Q1: Why is a UPS with transformer better for heavy equipment?
A transformer-based UPS provides electrical isolation, higher overload capacity, and better stability, which are essential for industrial machinery.
Q2: Is a transformer UPS suitable for harsh environments?
Absolutely. Its robust design makes it ideal for industrial environments with dust, heat, and unstable power conditions.
Q3: Can the ET20K HV 480V UPS support 3-phase motors?
Yes, its 3-phase design ensures balanced power delivery. This makes it ideal for driving large motors. It is also suitable for industrial machinery without phase imbalance issues.
Q4: How long can the ET20K HV heavy industrial UPS run on battery?
Runtime depends on the connected load and external battery configuration. With expanded battery banks, it can support several hours of operation.
Q5: What industries need a UPS with transformer?
Industries such as manufacturing, oil & gas, healthcare, and automation benefit most from transformer-based UPS systems.
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| Model | ET20K HV |
| Capacity | 20KVA/16KW |
| Topology | Double conversion online |
| Noise | < 65dB from side 1M |
| Dimension(WxDxH mm) | 850x635x1130 |
| Weight(Kgs) | 453 |
| 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 |
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