Epever TRIRON N Series, User Manual

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6. Protections, Troubleshooting and Maintenance
6.1 Protection
PV
Over Current
When the charging current or power of the PV array exceeds its rated current or power, it will be charged at the rated
current or power.
PV Short Circuit When not in PV charging state, the controller will not be damaged in case of a short-circuiting in the PV array.
PV Reverse Polarity
When the polarity of the PV array is reversed, the controller may not be damaged and can continue to operate normally
after the polarity is corrected.
NOTE: If the PV array is reverse connected to the controller,1.5 times rated controller powr (watts)from the PV array, will
damage the controller.
Night Reverse Charging Prevents the battery from discharging through the PV module at night.
Battery Reverse Polarity
Fully protected against battery reverse polarity; no damage to the controller will result. Correct the miswire to resume
normal operation.
Battery Over Voltage
When the battery voltage reaches the over voltage disconnect voltage, it will automatically stop battery charging to prevent
battery damage caused by over-charging.
Battery Over Discharge
When the battery voltage reaches the low voltage disconnect voltage, it will automatically stop battery discharging to
prevent battery damage caused by over-discharging. (Any controller connected loads will be disconnected. Loads directly
connected to the battery will not be affected and may continue to discharge the battery.)
Battery Overheating
The controller can detect the battery temperature through an external temperature sensor. The controller stops working
when its temperature exceeds 65 °C and begins working when its temperature is below 55 °C.
Lithium Battery Low
Temperature
When the temperature detected by the optional temperature sensor is lower than the Low Temperature Protection
Threshold(LTPT), the controller will stop charging and discharging automatically. When the detected temperature is higher
than the LTPT, the controller will be working automatically (The LTPT is 0 °C by default and can be set within the range of
10 ~ -40 °C).
Load Short Circuit
When the load is short circuited (The short circuit current is
≥ 4 times the rated controller load current), the controller will
automatically cut off the output. If the load reconnects the output automatically five times (delay of 5s, 10s, 15s, 20s, 25s),
it needs to be cleared by pressing the Load button, restarting the controller or switching from Night to the Day (nighttime >
3 hours).
Load Overload
When the load is overloading (The overload current is
≥ 1.05 times the rated load current), the controller will automatically
cut off the output. If the load reconnects automatically five times (delay of 5s, 10s, 15s, 20s, 25s), it needs to be cleared by
pressing the Load button restarting the controller, switching from Night to Day (nighttime > 3 hours).
Controller Overheating
★
The controller is able to detect the temperature inside the battery through an optional remote sensor. The controller stops
working when its temperature exceeds 85 °C and begins to working when its temperature is below 75 °C.
TVS High Voltage
Transients
The internal circuitry of the controller is designed with Transient Voltage Suppressors (TVS) which can only protect
against high-voltage surge pulses with less energy. If the controller is to be used in an area with frequent lightning strikes,
it is recommended to install an external surge arrester.