Minimum Battery System Capacity
The Discover Lithium Battery and NOARK device automatically manage the battery charge and discharge rates. Using large solar arrays with battery banks that are too small can exceed the operating limits of the battery to charge and possibly lead to the BMS triggering over-current protection. Battery capacity must accept the maximum charge current of the system, or charging must be curtailed below the operating limit of the installed batteries. Derive this value by adding together the charge capacities of all inverter-chargers and solar charge controllers in the system. Additionally, battery peak capacity must support the surge requirements demanded by the load attached to the inverter-charger. Match all inverter-charger peak power values with the sum of all battery peak battery current values.
Inverter Peak = (Inverter Surge Value) / (Inverter Efficiency) / (48V: Low Battery Cut-Off)
Single-Phase Models | Inverter Peak (10 seconds) | Max Continuous Charge | Max Continuous Discharge | AES RACKMOUNT 48-48-5120/ 48-48-5120-H Minimum per inverter (3) | HELIOS ESS 52-48-16000 Minimum per inverter (4) |
|---|---|---|---|---|---|
Ex9N-DH-3KS-AU | 129 A | 70 ADC | 70 ADC | 1 | 1 |
Ex9N-DH-3.6KS-AU | 155 A | 90 ADC | 90 ADC | 1 | 1 |
Ex9N-DH-5KS-AU | 215 A | 120 ADC | 120 ADC | 2 | 1 |
Ex9N-DH-6KS-AU | 258 A | 135 ADC | 135 ADC | 2 | 1 |
Ex9N-DH-7.6KS-AU | 326 A | 190 ADC | 190 ADC | 2 | 2 |
Ex9N-DH-8KS-AU | 344 A | 190 ADC | 190 ADC | 2 | 2 |
(1) Calculated based on the surge power and max Euro efficiency as published in NOARK Hybrid Inverter User Manual (Ex9N-DH-3KS1-AU/ Ex9N-DH-3KS-AU/ Ex9N-DH-3.6KS-AU/ Ex9N-DH-5KS-AU/ Ex9N-DH-6KS-AU).
(2) Calculated based on the surge power and max efficiency as published in NOARK Dual-MPPT Single Phase Hybrid Inverter 7.6 to 8 kW datasheet.
(3) Discover AES RACKMOUNT 48-48-5120/48-48-5120-H Battery, Peak Power: 218 A RMS (3 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS AES RACKMOUNT Installation and Operation Manual (805-0043 Rev J).
(4) Discover HELIOS ESS 52-48-16000 Battery, Peak Power: 300 A RMS (15 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS Installation and Operation Manual (805-0090 Rev D).
Inverter Peak = (Inverter Surge Value) / (Inverter Efficiency) / (48V: Low Battery Cut-Off)
Single-Phase Models | Inverter Peak (10 seconds) | Max Continuous Charge | Max Continuous Discharge | AES RACKMOUNT 48-48-5120/ 48-48-5120-H Minimum per inverter (2) | HELIOS ESS 52-48-16000 Minimum per inverter (3) |
|---|---|---|---|---|---|
Ex9N-DH-5KT-AU | 215 A | 120 ADC | 120 ADC | 2 | 1 |
Ex9N-DH-6KT-AU | 258 A | 150 ADC | 150 ADC | 2 | 1 |
Ex9N-DH-8KT-AU | 344 A | 190 ADC | 190 ADC | 2 | 2 |
Ex9N-DH-10KT-AU | 429 A | 210 ADC | 210 ADC | 3 | 2 |
Ex9N-DH-12KT-AU | 515 A | 240 ADC | 240 ADC | 3 | 2 |
(1) Calculated based on the surge power and max Euro efficiency as published in NOARK Three Phase Hybrid Inverter 5 to 12 kW datasheet.
(2) Discover AES RACKMOUNT 48-48-5120/48-48-5120-H Battery, Peak Power: 218 A RMS (3 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS AES RACKMOUNT Installation and Operation Manual (805-0043 Rev J).
(3) Discover HELIOS ESS 52-48-16000 Battery, Peak Power: 300 A RMS (15 seconds), 200 A DC Continuous Charge/Discharge, as published in Discover HELIOS ESS Installation and Operation Manual (805-0090 Rev D).