Holdvolt X31
Three-In, Single-Out Industrial UPS, 6–120 kVA
Three-phase feed, single-phase isolated output, for large single-phase process and control loads.
- 6–120kVA
- Tower and cabinet
- 0ms
- Transfer time
- 1Ph
- Isolated single-phase output
How it works
Double conversion, then an isolation transformer before the load.
- 0 ms
- mains to battery
- Isolation
- galvanic, inverter to load
- Neutral
- re-established at the transformer
Isolation
- Output isolation transformer
- Galvanic isolation
Environment
- Wide temperature range
- EMI filtering
Specifications
Factory catalog values, model by model.
6–120 kVA
| Model | X31-6K | X31-10K | X31-15K | X31-20K | X31-25K | X31-30K | X31-40K | X31-60K | X31-80K | X31-100K | X31-120K |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Other | |||||||||||
| Capacity | 6KVA | 10KVA | 15KVA | 20KVA | 25KVA | 30KVA | 40KVA | 60KVA | 80KVA | 100KVA | 120KVA |
| Protection: battery | Low-battery auto shutdown; auto restart when utility returns; miniature circuit breaker protection | ||||||||||
| Protection: over-temperature | Internal temperature > 85°C: transfer to bypass automatically | ||||||||||
| Protection: output short circuit | Current limiting; auto shutdown; miniature circuit breaker protection | ||||||||||
| Protection: UPS abnormal | Transfer to bypass automatically; load powered by utility | ||||||||||
| Noise filter | 10–100KHz at 40dB;100KHz–100MHz at 70dB | ||||||||||
| Note (custom options) | Custom options available: input isolation transformer, surge protector, 220 VAC input / 110 VAC output or 110 VAC input / 220 VAC output, non-standard special versions, and medical UPS. | ||||||||||
| Input | |||||||||||
| Input voltage | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±25% | 3-phase 380VAC±15%, ±25% (optional) | 3-phase 380VAC±15%, ±25% (optional) | 3-phase 380VAC±15%, ±25% (optional) | 3-phase 380VAC±15%, ±25% (optional) |
| Input frequency | 50(60)Hz±5% | ||||||||||
| Bypass | |||||||||||
| Voltage range | Single-phase 160–275 VAC (optional AVR: 110–300 VAC) | ||||||||||
| Frequency tracking range | 50(60)Hz±5% | ||||||||||
| Output | |||||||||||
| Output voltage | Single-phase 220VAC | ||||||||||
| Output frequency | 50(60)Hz±5% | ||||||||||
| Voltage regulation | ±1% | ||||||||||
| Frequency stability | ±0.5%(when utility fails) | ||||||||||
| Waveform | SPWM sine wave | ||||||||||
| Power factor | 0.8 (lagging) (optional 0.9) | ||||||||||
| THD | <3%(linear load) | ||||||||||
| Transient response | Voltage change ≤ 3% (100% load step on/off) | ||||||||||
| Crest factor | 3:1(max) | ||||||||||
| Max. current | 10A | 16A | 24A | 32A | 46 | 56A | 76A | 95A | 126A | 160A | 190A |
| Battery | |||||||||||
| Battery voltage | 192VDC | 192VDC | 192VDC | 192VDC | 192/240VDC (optional) | 192/240VDC (optional) | 192/240VDC (optional) | 384VDC | 384VDC | 384VDC | 384VDC |
| Battery type | Maintenance-free lead-acid battery | ||||||||||
| Recharge time | 8–10 hours to reach 90% capacity | ||||||||||
| Display & communication | |||||||||||
| Alarm: utility failure | Buzzer beeps once every 4 seconds | ||||||||||
| Alarm: utility abnormal | Buzzer beeps once every 4 seconds; utility mode indicator flashes | ||||||||||
| Alarm: battery low | Buzzer beeps once every 1 second; battery mode indicator flashes; low-battery LED on | ||||||||||
| Alarm: overload | Overload LED on; continuous buzzer | ||||||||||
| Alarm: UPS fault | Fault LED on; continuous buzzer | ||||||||||
| Control panel | LCD+LED | ||||||||||
| LCD display | UPS status; input/output voltage; input/output frequency; battery voltage; output load (%); inverter temperature | ||||||||||
| Low-battery indicator | On when battery voltage is low | ||||||||||
| Overload indicator | On when overloaded | ||||||||||
| Fault indicator | On when fault occurs | ||||||||||
| UPS status | Utility mode; Battery mode; Inverter; Bypass; UPS abnormal | ||||||||||
| Communication port | RS232 (external SNMP card supported); optional RS485 and DB9 dry contacts | ||||||||||
| Overload | |||||||||||
| Protection: overload | 110%: normal; 125%: transfer to bypass after 10 min; 150%: after 1 min; >150%: after 200 ms; auto recovery when load returns to normal | ||||||||||
| Environment | |||||||||||
| Operating temperature | -10–50°C | ||||||||||
| Relative humidity | 20–90% RH (non-condensing) | ||||||||||
| Altitude | < 2000 m (derate output by 2% for every +500 m) | ||||||||||
| Noise (1 m in front) | <58dB | ||||||||||
| Physical | |||||||||||
| Wiring method (I/O) | Terminal block | ||||||||||
| Net weight (no battery), kg | 85 | 130 | 140 | 220 | 260 | 300 | 330 | 479 | 504 | 640 | 700 |
| Dimensions (W×D×H) mm | 230×580×700 | 310×590×870 | 310×590×870 | 435×680×900 | 435×680×1000 | 435×680×1000 | 435×680×1000 | 800×800×1480 | 800×800×1480 | 800×800×1800 | 800×800×1800 |
| Efficiency | |||||||||||
| Overall efficiency | >87% | ||||||||||
| Transfer time | |||||||||||
| Transfer time (utility failure) | 0ms | ||||||||||
| Transfer time (inverter / bypass) | ≤1ms | ||||||||||
Factory values. Specifications may change; confirm against the quotation.Swipe the table sideways.
Where it fits
Applications and guides for this range.
Manufacturing
A half-second dip can stop a line, scrap a batch and reset every PLC. We size industrial and online UPS systems for controls, drives and process loads, not just the office IT room.
ApplicationTransportation
Signalling, passenger information, ticketing and control centres must keep running when the supply fails. We supply industrial, modular and central battery systems for stations, depots and terminals.
GuideIndustrial Isolation Transformer UPS: When Galvanic Isolation Matters
An isolation transformer breaks the direct conductive path between mains and load. In an industrial uninterruptible power supply it lets you create a clean new neutral, block common-mode noise and ride out the earthing problems that high-frequency units pass straight through.
GuideTransformer-Based vs Transformerless Online UPS: How to Choose
Choose a transformer-based online UPS for motors, heavy inrush, poor or generator-fed supplies and sites that need galvanic isolation. Choose a transformerless high-frequency unit for IT, control and electronic loads where size and efficiency count for more.
Questions buyers ask
What do you need for a quotation?
Load in kVA or kW, input voltage and phases, output phases, the backup time you need and where the unit will be installed. If you are unsure, send what you know and we will ask for the rest.
Can the unit carry our brand?
Yes. Logo, front panel, packaging and manual can be supplied under your brand. Minimum quantities and lead times are on the OEM / ODM page.
More in Industrial UPS
Five numbers get you a quote
Send what you know. We reply within one working day.
- LoadkVA or kW, and what it is
- Input voltage and phasese.g. 400 V three-phase, 50 Hz
- Output phasesSingle- or three-phase
- Backup timeMinutes at full or typical load
- SiteIndoor, temperature, altitude, generator