Off-Grid Sinusoidal Inverting Controller 300VA Isolated

1 Boost, isolation and sinusoidal waform generation by power frequency transforner.
2 Perfect protective function.
Off-Grid Sinusoidal Inverting Controller 300VA (Isolated)

Introduction:

NB600/24-220ZB inverting controller has no built-in battery box and external battery box will be required.

With MOSFET (made by US Fairchild Semiconductor Corporate) and Microchip signal processor have been built in the main circuit, this power supply has the features of high inverting efficiency and stable output voltage. This power supply is designed with various protective measures such as DC input overvoltage and under-voltage protection, reverse polarity protection, overload and short circuit protection for AC output to ensure the technical and reliability data to be met.

Application:

NB600/24-220ZB inverting controller will form a stand alone solar power system added with PV module and battery to generate power wherever having sun irradiation. The system can be used as utilities in the following places:
1 Remote mountain area, unattended frontier defense and island;
2 Communication base station and field operation;
3 Power demonstration project, landscape lighting, street light and billboard lighting;
4 Expressway, unmanned area lighting, camera shooting and telephone;
5 Oil field power supply for oil extraction equipment.

Features:

1 Boost, Isolation and Sinusoidal Waveform Generation by Power Frequency Transformer

With single stage power frequency transformer topology being adopted for boost, isolation and generation of sinusoidal waveform, it has the features of simple and reliable structure and good overload capacity. Its protective functions can be achieved in low voltage conditions. Since power frequency transformer is located between inverting power supply and load, the inverter is able to run stably and reliably with strong overload capacity and shock resistance ability.

2 SPWM Signal Generated by Software

Since SPWM signal is generated by software, the hardware circuit is simple and the system is stable, because traditionally SPWM signal was generated by synchronization of reference sinusoidal signal and triangle (saw tooth) signal, which would definitely result in complicated hardware circuit and low reliability.

3 Perfect Protective Functions

This power supply is designed with various protective measures such as DC input overvoltage protection, under-voltage protection, battery overcharge protection, night reverse charge protection, input reverse polarity protection for PV battery, overload and short circuit protection for AC output, and it can effectively ensure the system to operate normally and prevent any damage to the system even in the extreme situations.

4 Surface Mounting Assembly Process

Surface mounting assembly process has been used in the assembling of printed circuit board to increase product competency and meet the requirement of modern production.

5 Simple Human-computer Interface

The interface is comprised of a 4-digit Nixie-tube, a LED indicator and two buttons, and system running is very clear in normal state.


Technical Data
NB300/24-220ZB
Sinusoidal Inverting Controller
Rated Capacity
300 VA
System Nominal Voltage
DC 24V
PV
Input

Quantity of Charging Route
1
Max. Permit Charging Current
20A
Overcharge Protection Voltage
DC 28.8V
Overcharge Recovery Voltage
DC 26.4V
DC
Input
Battery Type
Sealed Lead Acid Storage Battery
Nominal Voltage
DC 24V
Charging Mode
PWM
Over-discharge Protection Voltage
DC 21.6V
Over-discharge Recovery Voltage
DC 26.4V
Overvoltage Protection Voltage
DC 32.0V
AC
Output
Rated Voltage
AC 220V
Rated Frequency
50 Hz
Output Waveform
Sinusoidal
Isolation
Power Frequency Transformer
Overload Capacity
125% 1 Minute
Voltage Stability
AC 220V±3%
Frequency Stability
50Hz±2%
Total Harmonic Distortion (THD)
≤3% (Linear Load)
Power Factor(PF)
0.8
Inverting Efficiency
84%
Continuous Running Time
Continuous
Display
Nixie-tube
Environ-
ment
Noise
≤50dB
Ambient Temperature
-15°C~+40°C
Site Altitude
≤5000m
Protection Rating
IP20
Dimensions(HxWxD)
155mm x 453mm x365mm
Weight (Without Solar panel and module)
11.2kg