Conext SW4048 4,000W 48V Installation

Basic Protection Features
975-0638-01-03 1–5
Basic Protection Features
The Conext SW has the following protection features:
• Over temperature shutdown for critical components such as the transformer
and the power board
• Battery temperature sensor (BTS) failure/battery temperature out-of-range
fault protection
• DC output over voltage protection during charge mode
• AC output overload and short circuit protection during invert mode
• AC backfeed
1
protection
The Battery Temperature Sensor (BTS) provides these protection features:
• battery over temperature charging protection preventing battery charging at
140 °F (60 °C) or higher, and
• charging voltage compensation based on the temperature of the battery the
BTS is connected to.
Grid-interactive and Other Features
Load Shaving
Load shaving (Load Shave) allows the Conext SW to support (or assist) the AC
source in powering local loads during a defined window of time (LoadShaveStart
and LoadShaveStop). See “Time-of-Use Metering” on page 1–7. It allows the
inverter to control how much current can be drawn from the AC source.
The Conext SW transitions to load shaving mode only when both the phase
currents exceed Load Shave Amps. It uses battery power to limit the peak load on
the AC input by providing the difference in amps between the actual load current
and the current limit set in Load Shave Amps. Some scenarios are presented
below to reflect this behavior.
Scenario 1
Load Shave Amps = 5A,
L1 = 7A of AC load,
L2 = 3A of AC load
Conext SW will not enter into the AC load shaving mode because one of the
phase currents (L1 or L2) is lower than the value of Load Shave Amps.
(L2 =3A) < (Load Shave Amps = 5A)
1.An AC backfeed error occurs when the AC output of the inverter/charger is connected or
routed back to the inverter/charger’s AC input terminal or if the AC internal transfer relay
error is detected.