BEDFORD Variable Frequency Drive Solar Inverter

1. Product Description

This product is specially desgined  for solar pv pumping system and aiming at environmental protection and economical market, no need battery and extral maintenance. Based on the core control arithmetic(DSP) of B503 vector control inverters, combined with the control requirements of PV water pump application. The function of MPPT,Sleep Mode, Multiple Water Level Control and other control protection functions can ensure normal operation of water pumps .According to the customers’ requirements , it can  switch to the power grid/AC supply.

2. Characteristics

DC/AC Input Compatible DC: Solar PV Power Supply AC: Dissel Generator or Power Grid Supply

No Need Battery

Environment-Friendly, Economical, No need additional maintenance

Optimized MPPT Arithmetic, DSP(Digital Signal Processor),Accuracy Reached 99% and above.

Multi-Water-level Control

Low Water Level,High Water Level Control, Water-Level Detecting Judgement.

Abundant Protection Functions

Featured with Protection Functions of Lightning-proof, Over-voltage,Over-current, Over-load,etc.

Sleep Mode

Automatically sleep in poor light , Automatically awake in bright light, unattended operation

3.Schematic Map

4.Power supply

5.Solar Cell Array and AC Power Supply

Note: if there is no protection diode connected to the end of the photovoltaic DC input, it is forbidden to close the switches (Q1 and Q2) at the same time, otherwise, it will damage the module of photovoltaic cell

The notes below should be considered for the AC debug

1.      Power On Sequencing:Firstly open Q2 ,and then close Q1;

notice:

(1) If there is no protection diode connected to the port of input-bus, it is forbidden to close photovoltaic cell switch “Q1” and input switch of power grid “Q2” at the same time, otherwise it will damage the module of photovoltaic cell

(2) When need to transform the power supply mode from power frequency to photovoltaic cell; you only need to turn off “Q1”firstly and then close “Q2”.

6.Selection Guide

1)Output 3AC 380V                                                          

Please contact our company for other specification.

2)Output  3AC 220V

Please contact company for other specification

7.simple introduction of factory.