Range
CESC Mercury battery storage
Three capacities, one all-in-one architecture: lithium iron phosphate cells, liquid cooling, conversion and control in a single cabinet.
Specifications taken from CESC manufacturer documentation. Full datasheets are provided with the quote.
The three, side by side
Comparison
What is identical across the three cabinets is written in grey. What sets them apart is in black: that is where the choice is made.
| Specification | 233kWhMercury 233 | 261kWhMercury 261 | 418kWhMercury 418Partial manufacturer documentation for this capacity |
|---|---|---|---|
| Electrical | |||
| Capacity | 233 kWhCESC manufacturer | 261 kWhCESC manufacturer | 418 kWh per cabinetCESC manufacturer |
| Power | 105 kWCESC manufacturer | 125 kW, external hybrid inverterCESC manufacturer | three configurations, 125 kW, 215 kW or 250 kWEuropean distributor |
| Nominal DC voltage | 832 V, range 728 to 936 VEuropean distributor | 832 VCESC manufacturer | not published |
| Grid connection | 400 V three-phaseEuropean distributor | 400 V three-phase, 3P+N+PEEuropean distributor | not published |
| Environment | |||
| Ingress protection | IP54 armoire, IP67 packEuropean distributor | IP55European distributor | not published |
| Fire safety | aerosol suppression at pack level, protection at cluster levelEuropean distributor | not published | three-level suppression, pack, gas at cluster level and water, hydrogen detectorCESC manufacturer |
| Standards cited | |||
| Standards | IEC 62619, IEC 62477, IEC 63056, IEC 61000Manufacturer documentation | UN 38.3, IEC 62619, IEC 63056, IEC 61000, IEC 62477Manufacturer documentation | not published |
Partial manufacturer documentation on Mercury 418.
“Not published” means what it says: the manufacturer does not document this specification for this capacity. It is not a missing function, it is a value we do not have and will not estimate on their behalf. It is requested and provided with the quote. On every other line, the source is written under the value.
418kWh
The largest capacity in the range, per cabinet.
The Mercury 418 installs on its own or in a row. The number of cabinets in an installation is decided on your load curve, never by a division.
CESC manufacturer data
View the Mercury 418 datasheet
The Mercury 418 in place, alongside a building open to the public. Manufacturer visual from CESC
All in one
What the cabinet brings together
An installation assembled on site calls for an integrator, a room, and someone responsible for the whole. An all-in-one cabinet arrives with its six functions already connected and proven at the factory.
- The cells
- Lithium iron phosphate, the chemistry chosen for stationary storage.
- The conversion
- The inverter that turns the cells' direct current into the site's alternating current.
- The cooling
- Liquid, to hold the cell temperature under load.
- The safety
- Detection and suppression, inside the cabinet, described model by model.
- The control system
- The EMS that decides when to charge and when to discharge.
- The enclosure
- The outdoor enclosure, its ingress protection rating and its anti-corrosion treatment.
The enclosure and humidity
The dehumidifier
The dehumidifier maintains a stable humidity level inside the cabinets and storage containers. It prevents condensation, metal corrosion and insulation degradation, and averts the short circuits and electrical failures that result from them. It extends the service life of the batteries and electrical equipment, and reduces maintenance interventions.
It is intended for coastal areas and areas with heavy salt fog, rainy seasons, cold regions and high altitudes: high ambient humidity, wide temperature variations, dew and premature ageing of equipment.
- Controlled humidity
- Equipment protection
- Extended service life
- Reduced maintenance
Functions stated by the manufacturer CESC. Whether the dehumidifier is fitted to each model is specified in the quotation.
The choice comes down to two figures: the power your site draws at peak, and how long that peak lasts.