Online HF UPS - with Isolation Transformer 20 KVA 18KW 192/240 VDC
Quick Specifications
Product Overview
The Arrow Powertech OLIT E20 31 Online UPS with Isolation Transformer is a high-performance and reliable three-phase power solution designed to provide clean, stable, and fully protected power for mission-critical applications. With a capacity of 20 KVA and an output of 18 KW, the OLIT E20 31 is ideally suited for data centers, healthcare facilities, industrial equipment, pharmaceutical operations, and critical manufacturing environments where uninterrupted and high-quality power is essential.
Equipped with advanced online high-frequency double conversion technology, the OLIT E20 31 delivers pure sine wave output, effectively isolating connected equipment from power disturbances such as voltage fluctuations, spikes, surges, and electrical noise. The integrated isolation transformer provides an additional layer of protection, ensuring safe operation of sensitive equipment including servers, medical devices, laboratory instruments, and precision industrial machinery. With zero transfer time, the UPS guarantees seamless power delivery during outages, eliminating downtime and maintaining continuous operations.
The Arrow Powertech OLIT E20 31 operates on a high-voltage DC system ranging from 192V to 240V, designed to support extended external battery configurations for long backup runtime. As a three-phase UPS, it ensures balanced load distribution, improved efficiency, and reliable performance under heavy loads, making it ideal for industrial, manufacturing, and data center applications.
Engineered for durability and long-term reliability, the OLIT E20 31 includes comprehensive protection features such as overload protection, short circuit protection, surge protection, and deep discharge protection. Its intelligent battery management system optimizes battery performance, extends battery life, and minimizes maintenance requirements.
Whether deployed in critical manufacturing, healthcare facilities, or industrial setups, the Arrow Powertech OLIT E20 31 Online UPS delivers dependable, clean, and continuous power. It is a cost-effective and efficient solution for safeguarding sensitive equipment, ensuring uninterrupted operations, and maintaining productivity in power-sensitive environments.
Key Features
- High frequency on-line double conversion technology
- Advanced dual-core DSP control technology and 3-level technology
- Active power factor correction (APFC), input power factor up to 0.99
- System efficiency is improved to 96%, energy saving rate is doubled
- Output power factor 1.0
- Dual input design, supporting independent bypass
- Advanced digital and parallel technology, providing higher reliability than single system
- 50/60Hz auto-sensing frequency | 50/60Hz frequency conversion mode
- Work efficiency up to 98% in ECO mode
- Fan speed varies intelligently with load, reducing noise and extending its service life
- Conformal coating technology to make UPS operate in harsh environment for a long time
- Flexible battery configuration setting, selectable battery numbers: 32~ 40 pcs
- Digitally controlled charger
- Ability to switch on the UPS by battery in the absence of mains power (Cold start)
- Zero switching time for power supply mode when mains power is unstable, ensuring output is uninterrupted
- Compact internal layout, small footprint
- 5 inches LCD colorful touch screen, friendly human & machine interface
- Powerful background software for parameters configuration and online upgrade
- Advanced multi-platform communication for UPS monitoring: RS232, USB, RS485, dry contacts, SNMP card, Wi-Fi card and GPRS card
- Linear derating in low voltage input, reducing battery discharging times, extending the service life of battery
- Intelligent battery management, automatic equalized and float charging control, charger dormancy control, improving the reliability of charger and extending the battery life
- Effective hardware &software protection, robust self-diagnosis function, abundant event log for future check
- Standard RS232, USB, RS485, EPO, Dry contacts, parallel port
- Optional SNMP card, WI-FI card, GPRS card, SMS alarms
Technical Specifications
| CAPACITY | |
| Capacity | 20 kVA / 20 kW |
| INPUT | |
| Input Wiring | Three-phase five-wire (3Φ + N + PE) |
| Rated Voltage | 380 / 400 / 415 Vac |
| Voltage Range | 190~305 Vac (linear derating 50–100% load); 305~499 Vac (no derating) |
| Rated Frequency | 50 / 60 Hz (auto-sensing) |
| Frequency Range | 40~70 Hz |
| Input Power Factor | ≥ 0.99 |
| Bypass Voltage Range | −40% ~ +15% (settable) |
| THDi | ≤ 5% |
| OUTPUT | |
| Output Wiring | Single-phase three-wire (1Φ + N + PE) |
| Rated Voltage | 208 (PF=0.9) / 220 / 230 / 240 Vac |
| Voltage Regulation | ± 1% |
| Frequency | Synchronized to bypass (mains mode); 50 / 60 Hz ± 0.1% (battery mode) |
| Waveform | Sinusoidal |
| Output Power Factor | 1 |
| THDv | ≤ 1% (linear load); ≤ 3% (non-linear load) |
| Crest Factor | 3 : 1 |
| Overload | 105–110%: 10 min · 110–125%: 1 min · 126–150%: 30 s |
| BATTERIES | |
| DC Voltage | 192 Vdc (192~240 Vdc settable) |
| Number of Batteries | 16 pcs (16~20 settable) |
| Charger | Long-time: 5 A default, 1~5 A settable; 10 A optional |
| Recharge Time | Standard: 90% restored in 8 hours; Long-time: depends on battery capacity |
| SYSTEM | |
| Efficiency | ≥ 94% at full load · 95% max at 60% load · ≥ 98% ECO mode |
| Transfer Time | 0 ms |
| Protections | Short-circuit · Overload · Over-temperature · Battery low / over / under-voltage · Fan failure |
| Max. Parallel Units | 4 |
| Communications | RS232 (standard); USB / RS485 / Dry contacts / SNMP / Battery temp. compensation (optional) |
| Display | LCD + LED |
| ENVIRONMENT | |
| Operating Temperature | 0°C ~ 40°C |
| Storage Temperature | −25°C ~ 55°C (without battery) |
| Relative Humidity | 0~95% (non-condensing) |
| Altitude | ≤ 1000 m; derate 1% per additional 100 m |
| IP Rating | IP 20 |
| Noise Level at 1 m | ≤ 58 dB |
| OTHERS | |
| Dimensions W×D×H | 191 × 495 × 515 (H) mm |
| Packaged W×D×H | 285 × 593 × 618 (H) mm |
| Net Weight | 26.5 kg |
| Gross Weight | 28 kg |
Applications & Use Cases
Support, Warranty & Service
12-Months RTB Warranty
We offer a RTB warranty covering parts and labor
AMC Available
Annual maintenance contracts for hassle-free operation
Installation Service
Professional installation across India
Pan-India Support
24/7 technical assistance hotline