Application
Plan battery-backed operation for critical loads, with switchover performance confirmed for the selected architecture and site.
Solution
Backup Power
Plan battery-backed operation for critical loads, with switchover performance confirmed for the selected architecture and site.
Project lens
Sunket Supply scope
Product supply, inverter matching, European warehouse coordination and project-scoped support.
Best fit
Commercial and industrial buyers, installers and distributors planning energy projects in Europe.
The challenge
When the grid drops, production stops
For factories, data-critical sites and cold storage, even short outages mean lost output, spoiled goods or safety risk.
Grid outages and voltage dips interrupt continuous processes and damage sensitive equipment.
Diesel gensets are slow to start, costly to run and add emissions and maintenance.
Critical loads need a defined transfer method, acceptable interruption time and validated recovery sequence.
How it works
How battery backup works
Grid-loss detection and critical-load transfer are designed around the selected inverter, transfer equipment and site requirements.
- 01
Grid monitoring
Compatible inverter and transfer equipment monitor the grid conditions defined in the approved backup design.
- 02
Outage detected
On grid loss, the selected transfer architecture isolates and supplies the approved critical-load circuit. Transfer time is confirmed for the final equipment and wiring design.
- 03
Battery supplies loads
The selected power-conversion equipment supplies backed-up loads; supported PV charging during an outage is confirmed for the final architecture.
- 04
Grid returns
Where the selected architecture supports it, the system resynchronises and returns the approved loads to grid supply after recovery conditions are met.
Design references
System specifications
01Per designtransfer method and time
02Project-setparallel system scope
03Load-basedbackup duration
Product specifications are indicative for the Hithium 261 kWh C&I storage class. Final equipment, operating functions and project outcomes depend on the selected architecture, model and firmware, available interfaces, site design, tariff and local grid requirements, and are confirmed in the project quote.
Sunket Supply scope
What Sunket Supply supplies
Reference equipment
A practical, project-matched equipment stack
The final architecture may use an integrated Hithium PCS or the confirmed-compatible Hithium DC cabinet and Growatt WIT hybrid-inverter route. Equipment is selected against the site design.
261 kWh liquid-cooled DC battery cabinetHithium 261 kWh DC CabinetView product range
63–125 kW three-phase C&I hybrid inverter rangeGrowatt WIT 63–125K-XHUView product rangeExact model, firmware, interfaces, available quantity, dispatch warehouse and delivery timing are confirmed in the project quotation.
C&I ESS + transfer architecture
Hithium C&I storage with compatible inverter and transfer equipment selected for the required backup mode.
Critical-load design
Sizing of backup capacity and duration around your critical loads and acceptable downtime.
Project coordination
Product and interface documentation coordination; the final transfer design, settings, installation, commissioning tests and service responsibilities are agreed with qualified local parties.
FAQ
Frequently asked
How fast is the switchover?
Switchover time depends on the selected inverter, transfer equipment, firmware and site wiring. It is confirmed against the critical-load requirement before quotation and must be validated during commissioning.
How long can the system back up my site?
Backup duration is sized around the approved critical loads, state-of-charge reserve and operating limits. Any PV contribution during an outage depends on the final inverter, transfer architecture, controls and available solar conditions.
Can backup be combined with peak shaving or self-consumption?
These functions may be combined where the selected equipment, firmware, interfaces and local rules support them. The operating logic must reserve sufficient energy and power for the agreed backup duty.
Request a project-specific quote
Share your site profile and Sunket Supply returns a tailored, priced quote within 24 hours, with product availability and delivery scope confirmed.