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BMZ ESS Z Li-Ion 48V battery
Lithium-ion battery system with built-in balancers, monitoring and protections. Highly efficient energy storage system with a 5000 cycle or 10 year capacity guarantee.
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ESS Z is a new modular battery system for electricity storage that can store surplus energy generated by the operation of a PV system for later use. The surplus energy can thus be routed to the ESS storage system and, using an inverter, is available when needed: in the evening, at night or on a cloudy day.
With the ESS Z, the user of the PV installation becomes more independent of electricity prices and uses his own, environmentally friendly power depending on his needs.
ADVANTAGES OF ESS:
Stores energy during the day; consumes during the day and night
Increases independence from daylight and the public power grid
Economical and environmentally friendly
Modular design: capacity can be adapted to customer needs
TECHNICAL SPECIFICATIONS
Efficient energy storage system
Advanced lithium-ion technology
High efficiency: 95%
High depth of discharge: 80% DOD (Depth of Discharge)
High durability: 5,000 full cycles
Up to 12 modules can be connected in parallel
High operator safety
SAFETY FEATURES
DC relay and chemical battery shutdown fuse
Over- or under-voltage monitoring of each cell string with redundant disconnection to the main disconnector
Temperature monitoring of each cell string and over-current fuse in each cell
Protection against attempting to use the battery after a deep discharge or other serious fault
Safe parallel connection of each cell string protected by an overcurrent fuse in each cell
Active current control as a function of cell voltage and temperature (derating)
Sealed metal casing
A SYSTEM DEVELOPED TO THE STANDARDS AND RECOMMENDATIONS OF USERS OF FIXED ENERGY STORAGE SYSTEMS:
VDE-AR-E 2510-50
VDE-AR-E 2510-2
DIN EN 62619
FNN
04/2016 Version
INFORMATION FOR USERS:
Cell discharge temperature: 2°C to 45°C
Cell charge temperature: 2°C to 45°C
Recommended battery temperature: 10°C to 25°C
Self-discharge rate: approx. 2% per year
Maximum number of batteries connected in parallel: 12 (additional equipment required)
Protection class: IP 21
CE marking: yes
UN test 38.3: yes
Technical specifications (see attached leaflet for full details):
Usable energy: 7.1kWh
Nominal voltage: 54.75 V
End charging voltage: 61.5 V
Minimum voltage: 45.0 V
Usable capacity: 129.6 Ah
Maximum charging current: 81 A
Maximum constant discharge current: <195 A (depending on SoC and temperature)
Maximum discharge current (instantaneous): 300 A (3 sec.
Lifetime: 5000 cycles at 80% DoD
Weight: 98 kg
Dimensions: 638 x 421 x 487 mm
Operating Temperature (recommended for full warranty): 10 to 25 degrees Celsius
Operating Temperature (max. range): 2 to 45 degrees Celsius
The battery is designed for indoor installation in domestic and industrial applications and the protective BMS will shut it down below 0 degrees Celsius.
Superior manufacturer's capacity warranty of 5000 cycles or 10 years (see attached document below "Warranty Terms and Conditions")
Manufacturer: BMZ Germany
Please note: the battery is shipped "off", so transport is completely safe. The battery cabinet includes 2 drawers for PNA1 knife fuses (160-300A - not included and if you wish, we will deliver with the battery).
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Price history
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Lithium-ion battery system with built-in balancers, monitoring and protections. Highly efficient energy storage system with a 5000 cycle or 10 year capacity guarantee.
