3000 watt (1500VA) off grid inverter for sales, with battery charging, LCD digital display show voltage, load and battery info in real time. It is great for use at office and public facilities, household system, network transmission equipment, manufacturing, control system, solar energy system, etc.
- Pure sine wave output for compatibility with loads of different types
- Visualization of operation status of the equipment through a digital LCD
- Automatically transfer between battery and line modes
- Pure sine wave output (THD < 3%) for wide range of applications and harsh environment
- A wide range of input voltage, accurate output and all automatic voltage stabilization
- Overall protection functions (battery overvoltage protection, battery under voltage protection, overload protection, short circuit protection and over temperature protection)
|Rated power load
||DC 21-30V (24V)/ DC 42-60V (48V)
||50Hz/ 60Hz±5% (Auto)
||110V/ 120V/ 220V/ 230V/ 240V AC
||50Hz/ 60Hz±5% (Auto)
||Pure sine wave
||≥85% (full load)
|Wave form distortion factor
|Output power load factor
||105-120% at 30s; 120-150% at 10s; >150% at 5s
||DC 10.5 (12V)/ DC 21 (24V)/ DC 42 (48V)/ DC 84 (96V), Alarm and shut down
||85℃, Auto shut down after alarm
||DC 17V (12V)/ DC 33V (24V)/ DC 66V (48V)/ DC 128V (96V), Auto shut down after alarm
||Time & date setting, Contrast, Brightness, Sound, Voltage switch, Grid charger, Clear records, Reset
||Grid fist/ battery first/ standby mode
||Record (fault record), system information
||10%~90% (No condensation)
||<3000 (>1000m, derating)
Inverter for Solar Panel System
Tips: Can single-phase inverter and three-phase inverter be connected?
A customer who has installed a three-phase 15kW inverter. Recently, 10pcs of 300W components will be added. If he wants to use a single-phase inverter, is it possible to connect the electric system?
1. There is no problem with zero-line system access
According to the current national standard "Design Code for Low Voltage Distribution" (GB50054), there are three grounding modes of low voltage distribution system, namely IT system, TT system and TN system. Among them, IT system has no zero line, TT system and TN system have zero line, and most of them are TN system in industrial, commercial and civil systems. On grid inverters are connected to the grid. Three-phase inverters are three firing lines, one zero line and one ground wire. Single-phase inverters are one firing line, one zero line and one ground wire. If there is a three-phase grid, single-phase inverters can only connect one phase line (that is, the firing line) and one ground wire with one zero line, so there is no electrical problem.
2. It's no problem to use three-phase four-wire meter to measure electricity
Three-phase watt-hour meter is used to measure the power output (or load consumption) of three-phase AC circuit. Its working principle is exactly the same as that of single-phase watt-hour meter. It only adopts the way of multi-group driving parts and multiple aluminum discs fixed on the rotating axle to realize the measurement of three-phase electric energy. Three-phase four-wire active watt-hour meter differs from single-phase watt-hour meter in that it consists of three driving elements and three aluminum discs mounted on the same rotating shaft. Its reading directly reflects the energy consumed by three-phase watt-hour meter. Three phases are measured separately, allowing three phases to be different, so the power of one phase increases without affecting the other two phases.
3. Matters needing attention
When single-phase inverters are connected to the power grid, we should pay attention to two problems. One is the unbalanced three-phase. Therefore, we should try to connect single-phase inverters to the phase with the greatest load. If the three-phase load is balanced, the single-phase power should not be too large, and it is better not to exceed the load power. If the photovoltaic power is larger than the load power, when the photovoltaic system is connected to the grid, if the local load cannot be consumed, it will be sent to the remote load or the upper power grid, which will cause the voltage of the inverters to rise. The higher the power is sent out, the higher the voltage will be. Seriously, it may cause the overvoltage protection of the inverters and shutdown.