HM Series 3-15kVA 48V Modular Parallel Inverter
A 19-inch telecom inverter that grows with the site: 3kVA modules in parallel up to 15kVA, with 4+1 redundancy and RS485 reporting.
Product image
- Brand
- HighIdea
- Type
- Modular parallel DC-AC inverter (48VDC, 19-inch rack)
- Typical applications
- Telecom equipment rooms, modular IT rooms, industrial control, security systems, office backup
- Models in range
- HM 3 kVA (1 module), HM 6 kVA (2 modules), HM 9 kVA (3 modules), HM 12 kVA (4 modules), HM 15 kVA (5 modules)
- Category
- Power & Telecom Inverters
The HM Series is HighIdea's modular telecom inverter platform. A standard 19-inch frame is populated with 3kVA inverter modules; up to five can operate in parallel for a maximum of 15kVA, with a 4+1 configuration giving redundancy without a separate UPS cabinet.
Design notes
With mains present, the load is supplied from bypass. When mains fails or goes out of tolerance, the system transfers to battery inverter operation and delivers a clean 220Vac / 50Hz sine wave from the 48VDC bus. The design includes battery under/over-voltage protection, output over-voltage protection, output under-voltage alarm, short-circuit and over-temperature protection, and RS485 reporting for remote monitoring.
Automatic start-up is triggered when the DC input exceeds 48 VDC (or mains is present on charging versions); a DC cold start can be initiated from the front panel when no mains is available. The external battery bank is normally a VRLA string sized to the site's autonomy requirement.
Configuration
Specify the number of modules, the required redundancy, the 48VDC battery capacity and the monitoring interface. For a simpler fixed-capacity rack or portable unit see the HP 6k; for utility DC buses see the H 1-3kVA.
Key Features
- Standard 19-inch rack frame built from 3kVA inverter modules
- Up to five modules in parallel for 15kVA, with 4+1 redundancy
- Mains bypass under normal conditions, automatic inverter transfer on failure
- Pure sine 220Vac / 50Hz output from a 48VDC battery bus
- RS485 reporting of status and alarms to the site monitoring system
- DC cold start and automatic restart on DC or mains recovery
- Battery under/over-voltage, output over-voltage, short-circuit and over-temperature protection
Applications
Telecom equipment rooms
Add 3kVA blocks as the load grows without replacing the whole system.
Modular IT & edge rooms
4+1 redundancy in a standard rack footprint.
Industrial control & security
RS485 reporting into a building or plant monitoring system.
FAQ
How does the modular architecture work?
What happens when mains fails?
Can it start without mains?
Related Models
H Series 1-3kVA
A compact rack-mount online inverter that turns a station DC bus into clean, fully isolated 220Vac power — with zero transfer time and no back-feed noise.
View detailsHP Series 6k
A CPU-controlled 6k telecom inverter for 19-inch racks or portable cabinets — clean PWM sine output with a full-status LCD.
View detailsOnline DC-AC Inverters
Continuous inverter-fed output from a station or telecom DC bus — 0 ms transfer, full isolation and no noise fed back into the DC system.
View detailsSpecification reference
| Rated capacity | 3 - 15 kVA (up to 5 x 3 kVA modules) |
|---|---|
| DC input voltage | 48 VDC |
| Output voltage | 220 Vac / 50 Hz |
| Output waveform | Pure sine wave |
| Topology | Online / bypass-priority modular inverter |
| Parallel capability | Up to 5 modules, 4+1 redundancy |
| Communication | RS485 |
| Battery | External VRLA bank |
| Protection | Battery under/over voltage, output over/under voltage, short circuit, over temperature |
| Mounting | Standard 19-inch rack |
Specifications subject to the latest factory data. Final configuration is sized against the actual load, backup runtime and site power conditions — this table is for pre-selection only.