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Issue
When on grid (magnum passing thru power from main panel) the panels are producing approximately 10 amps of power @ 240 volts ac without an issue. However, when I go off grid (micro grid) the amperage from the enphase m250 inverters (coming from the solar panels) fluctuates greatly peaking at 50% of on grid power.
Initially I thought the magnum inverter was frequency shifting to 60.5 HZ to turn off enphase inverters however I monitored the frequency during the erratic behavior and it never goes above 59.9 hz and also the amperage fluctuates immediately (not after the 5 minute wait time built into the enphase inverters)
I did notice that while off grid (microgrid) the voltage fluctuates from 243 volts to 246 volts. During off grid operation the dump load ( 4 x 300 watt ceramic resistors) trigger repeatedly as the batteries are fully charged and the load in the sub panel is not significant
I have spoken to magnum energy support and they seem to believe that my batteries are undersized for the amount of power coming in from the Solar panels.
Would appreciate any help you can provide.
Solar System Setup
11 x 265 Watt Panels
11x M250 Enphase Inverters
1 x Magnum 4448 PAE Inverter (RTR remote)
8 x 6 volt interstate 205 AMP hour batteries (wired in series for 48 volts)
2 Gauge DC cables
4 x 300 watt resistors (dump load)
When on grid (magnum passing thru power from main panel) the panels are producing approximately 10 amps of power @ 240 volts ac without an issue. However, when I go off grid (micro grid) the amperage from the enphase m250 inverters (coming from the solar panels) fluctuates greatly peaking at 50% of on grid power.
Initially I thought the magnum inverter was frequency shifting to 60.5 HZ to turn off enphase inverters however I monitored the frequency during the erratic behavior and it never goes above 59.9 hz and also the amperage fluctuates immediately (not after the 5 minute wait time built into the enphase inverters)
I did notice that while off grid (microgrid) the voltage fluctuates from 243 volts to 246 volts. During off grid operation the dump load ( 4 x 300 watt ceramic resistors) trigger repeatedly as the batteries are fully charged and the load in the sub panel is not significant
I have spoken to magnum energy support and they seem to believe that my batteries are undersized for the amount of power coming in from the Solar panels.
Would appreciate any help you can provide.
Solar System Setup
11 x 265 Watt Panels
11x M250 Enphase Inverters
1 x Magnum 4448 PAE Inverter (RTR remote)
8 x 6 volt interstate 205 AMP hour batteries (wired in series for 48 volts)
2 Gauge DC cables
4 x 300 watt resistors (dump load)
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