Holdvolt H31
Three-Phase In, Single-Phase Out Online UPS, 10–30 kVA
Takes a balanced three-phase feed and delivers one clean single-phase output for larger single-phase loads.
- 10–30kVA
- Tower and rack
- 0ms
- Mains to battery and to bypass
- ≥95.5%
- Overall efficiency
- ≥98.5%
- ECO mode
- 190–520V
- Line input range
- 0.99
- Input power factor
How it works
Mains lost. The load does not notice.
- 0 ms
- mains to battery
- DC bus
- battery always connected
- Inverter
- load never sees the grid
Conversion
- Online double conversion
- DSP control
- Active PFC, input PF ≥0.99
- ECO mode
Grid and generator
- Wide input voltage
- Generator compatible
- 50 / 60 Hz auto-sensing
- 3-phase input, 220 VAC output
Battery
- Adjustable battery quantity
- Multi-stage charging
- Cold start on battery
Monitoring
- LCD panel
- RS-232 / USB
- SNMP card (option)
- EPO
Specifications
Factory catalog values, model by model.
10–30 kVA
| Model | H31-10K | H31-15K | H31-20K | H31-30K |
|---|---|---|---|---|
| Other | ||||
| Capacity | 10KVA/8KW | 15KVA/12KW | 20KVA/16KW | 30KVA/21KW |
| phase | 3/1 | |||
| Input | ||||
| Voltage range | phase voltage 110–300VAC , line voltage:190–520VAC | |||
| Rated voltage | 3 x 380/400/415 VAC (3Ph+N) | |||
| Frequency range | 44–56Hz @50Hz/54Hz–66Hz @60Hz | |||
| Power factor | 0.99@100% load | |||
| Bypass | ||||
| bypass voltage | (60%–120%)*220Vac Can be set through software | |||
| Output | ||||
| Output voltage | 220Vac | |||
| Voltage regulation | ±1% | |||
| Frequency range | 50Hz:(44–56)Hz, Follows; 60Hz:(54–66)Hz, Follows | |||
| Frequency range (Battery Mode) | 50 Hz±0.1Hz | |||
| Crest factor | 3:1(max) | |||
| THD | ≤3%THD(linear load); ≤5%THD(Non-linear load) | |||
| Power factor | 0.8 | 0.8 | 0.8 | 0.7 |
| Transfer time | ||||
| Transfer time (Utility → Battery) | 0ms | |||
| Transfer time (Inverter → Bypass) | 0ms | |||
| Overload | ||||
| Overload capability (utility) | Power supply: 102%<Load≤110% – switch to bypass mode and issue a warning after 30 minutes; 110%<Load≤130% – switch to bypass mode and issue a warning after 10 minutes; 130%<Load≤150% – switch to bypass mode and issue a warning after 60 seconds; Load>150% – switch to bypass mode and issue a warning after 300 milliseconds. | |||
| Overload capability (battery) | Battery: 102%<Load≤110% – switch to bypass mode and issue a warning after 10 minutes; 110%<Load≤130% – switch to bypass mode and issue a warning after 1 minute; 130%<Load≤150% – switch to bypass mode and issue a warning after 10 seconds; Load>150% – switch to bypass mode and issue a warning after 300 milliseconds. | |||
| Efficiency | ||||
| Overall efficiency | ≥95.5% | |||
| ECO Efficiency | ≥98.5% | |||
| Battery | ||||
| Long-run model: battery voltage | 12V | |||
| Long-run model: battery quantity | 16-20cells (Factory default: 16cells) | 16-20cells (Factory default: 16cells) | 16-20cells (Factory default: 16cells) | 32cells |
| Long-run model: charging current | 1-12A(Factory default: 5A) | |||
| Physical | ||||
| Physical (L×W×H) mm | 534*190*338 | |||
| Weight KG | 17 | 17.2 | 17.4 | 18.9 |
| Environment | ||||
| Operating temperature | 0–40°C | |||
| Relative humidity | 20%–90%RH (non-condensing) | |||
| Altitude | <1000m | |||
| Noise (1 m in front) | < 60dB | |||
| Display & communication | ||||
| Management | Intelligent RS-232/USB; Optional SNMP Card, EPO | |||
Factory values. Specifications may change; confirm against the quotation.Swipe the table sideways.
CE certificates
EN IEC 62040-1 safety (LVD) and EN IEC 62040-2 EMC, high-frequency online range.
LVD · Three-phase online, to 600 kVA
EMC · Three-phase online, to 600 kVA
LVD · Three-in, single-out online, 10–30 kVA
EMC · Three-in, single-out online, 10–30 kVA
LVD · Single-phase online tower, 1–10 kVA
EMC · Single-phase online tower, 1–10 kVA
LVD · Single-phase online rack, 1–10 kVA
EMC · Single-phase online rack, 1–10 kVA
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.
ApplicationHealthcare
Imaging systems, lab analyzers and hospital IT react badly to dips and outages. We size double-conversion online UPS systems for individual devices up to whole hospital wings.
GuideOnline vs Offline UPS: Double Conversion, Line-Interactive and Standby
Uninterruptible power supplies come in three basic designs. Offline and line-interactive units pass mains through and switch to battery when it fails. An online double-conversion unit rebuilds the output all the time, so the load never sees the grid.
GuideHow to Size an Online UPS: kVA, kW, Inrush and Battery Runtime
Sizing a UPS system is two jobs: choose a power rating that carries the load with margin, then a battery that carries it for long enough. Here is a method and a worked estimate; for a real project, ask us for a calculation.
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 Online 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