It ships without an internal battery: the unit connects to an external 96VDC battery bank that you size to match your required backup time. This makes the HD3KS a natural fit for system integrators and project buyers who design their own DC banks, prefer local battery sourcing, or need a specific runtime that standard built-in configurations cannot deliver.
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Zero transfer time — online double conversion means no switchover gap during a mains failure. -
Ultra-wide input range — operates from 90–300VAC and 40–70Hz, dramatically reducing battery discharge in unstable grids. -
Flexible runtime — the external battery bank is specified by you, for your backup-time target, not limited by a built-in pack. -
Lower cost of entry — pay only for the UPS; source batteries locally or through us, whichever serves your project better.
Model HD3KS parameters
| General | |
|---|---|
| Model | HC3KS |
| Capacity (VA / W) | 3KVA / 2.7KW |
| Topology | Single phase in / single phase out |
| Mains input | |
| Wiring | L / N + PE |
| Rated voltage | 208 / 220 / 230 / 240 VAC |
| Voltage range | 90 – 300 VAC |
| Frequency range | 40 – 70 Hz |
| Input power factor | ≥ 0.99 |
| AC output | |
| Wiring | L / N + PE |
| Output voltage | 208 / 220 / 230 / 240 VAC |
| Voltage regulation | ± 1% |
| Output frequency | 50/60 ± 4Hz (sync mode) · 50/60Hz ± 0.1% (free run) |
| Waveform | Pure sine wave |
| THDV distortion | < 2% (linear load) · < 7% (non-linear load) |
| Overload capability | 1 min @ 105–125% · 30 s @ 125–150% · 0.5 s @ >150% |
| Efficiency — AC/AC | 90% |
| Efficiency — DC/AC | 88% |
| Battery & charging | |
| Rated battery voltage | 96 VDC — external |
| Battery capacity | External — sized to your runtime requirement |
| Charging current | 1A (standard) · 4A (long backup model) |
| Physical & HMI | |
| Dimension (W×D×H) | 190 × 318 × 368 mm |
| Weight | 7.7 kg |
| Display | LCD — input voltage, frequency, load level, operation mode, health status |
| Communication | |
| Standard | RS232 port |
| Optional cards | SNMP (app / web / PC, server & NAS shutdown) · Modbus · USB · Relay |
| Environment | |
| Operating temperature | -10 to 50 ℃ |
| Relative humidity | 0 – 98% (non-condensing) |
| Acoustic noise | < 55 dB @ 1m |
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