StroomlijnenHospitality
Contact
HospitalityBattery safety

Stroomlijnen ESS 261

Battery safety in your hotel.

From the chemistry in each cell to the connection with your fire alarm panel. Explore the ESS 261 safety design and the questions to discuss with your installer and insurer before siting a cabinet.

Explore the safety layers
Detail of the ESS 261 showing the red emergency stop and the control window with its green light ring.

ESS 261

Six layers of protection

Five layers protect the battery inside the cabinet. A sixth layer is available when the hotel’s fire alarm panel is wired in on site.

  1. Inside the cabinet

    Lithium iron phosphate

    The battery uses LFP cells. Their thermally stable chemistry provides the first, passive layer of protection.

  2. Inside the cabinet

    Cell monitoring

    The battery management system tracks individual cell voltages and temperatures, as well as current and electrical insulation. Depending on the fault, it can issue a warning, reduce charging power or disconnect the battery.

  3. Inside the cabinet

    Liquid cooling

    A liquid circuit carries heat away from the battery. Separate temperature limits govern when the cells can charge and discharge.

  4. Inside the cabinet

    Automatic fire suppression

    If the battery management system detects uncontrolled heating (thermal runaway), it activates the built-in suppression system, emergency stop and critical alarm.

  5. Inside the cabinet

    Physical emergency stop

    The red stop button opens a power contactor, disconnecting the cabinet from the hotel’s AC electrical system. The cells still contain stored energy.

  6. At your property

    Hotel fire panel connection

    The installer can hardwire the hotel’s fire panel to the same contactor. A fire alarm can then automatically disconnect the cabinet from AC power. This connection is designed and tested for each property.

Battery storage

Siting the cabinet

For indoor or outdoor installation, we review floor loading, heat removal, access and fire safety with your installer. Your insurer can request the certificates, test reports and siting plan. Site acceptance testing and the insurance assessment apply to the individual property.

Dimensions and weight
1.45 m wide × 1.33 m deep × 2.15 m high. Weight per cabinet is 2,650 ± 50 kg.
Nominal storage
261 kWh
Bidirectional power
125 kW

The energy available to the hotel depends on the state of charge, the reserve setting, temperature and conversion losses.

Evidence for your property

What your insurer can review

The complete storage system is certified for electrical safety to IEC 62933-5-2:2020. The IEC 63056:2020 certificate covers the battery cluster. The UL 9540A reports describe tests on individual cells. The enclosure is factory-certified to IP55.

Read more about battery storage