Rectifier reverse VR-300
Purpose
The VR-300 reversible rectifier is designed for power supply from the three-phase network of the technological equipment (platingbaths, water treatmentsystems, etc.) by direct voltage with polarity alternation. TheVR-300 rectifier operation mode is long-term irrespective of the load operation mode when being powered from the external network. TheVR-300 reversible rectifierfulfils following additional functions:
Technical Characteristisc
Output parameters of the rectifier
Design
TheVR-300 reversible rectifieris arranged according to the modular principle in the form of installed on floor metal cabinet (Figure 1). VR-300 reversiblerectifier(1). Frontupperfalsepanelcomprisesautomaticbreaker “NETWORK”, switch “CONTROL 1-2”, digitalindicatorsandcontrols(2). Front middle false panel, under which the cabinet screw terminal blocks for connection to the network and to the load are located (3). Front lower false panel of the cabinet, under which three-phase transformers are (4). Upper panel of the cabinet, on which fittings for cables are located (5).
The VR-300 reversible rectifier is designed for power supply from the three-phase network of the technological equipment (platingbaths, water treatmentsystems, etc.) by direct voltage with polarity alternation. TheVR-300 rectifier operation mode is long-term irrespective of the load operation mode when being powered from the external network. TheVR-300 reversible rectifierfulfils following additional functions:
- stepwise regulation of the output voltage within assigned range;
- regulation of operation time and pause;
- issue of commands “Operation”, “Electromagnetic valve control” and :Emergency”;
- electronic protection of short circuitin load;
- indication of work modes;
- digital indication of output current and voltage as well as time of work and pause;
- possibility of remote controlя;
- direct current-based galvanic decoupling between input network and output with electrical strength 1500Vduring 1 min.
Technical Characteristisc
| Parameter |
Value |
| Rated input voltage, V; Hz | 3-phase 380/220; 50 |
| Maximum consumed power from network, kVa | 11,0 |
| Output voltage range, В | =20…80* |
| Number of stages | 7 |
| Maximum load current (at output voltage up to 33 V), А | 300 |
| Range of regulation of operating time, s. | 10...99 |
| Pause time adjustment range, s. | 5...99 |
| Maximum current of signal contacts, А | 10 |
| Minimal efficiency | 90% |
| Minimal insulation resistance, МОhm |
5,0 |
| Minimal inlet cable section, мм2 | 5х1,5 |
| Minimal outlet cable section, мм2 | 2х95 |
| Maximal overall dimensions of the cabinet (WхHхD), mm | 600х1470х410 |
| Maximal mass, kg | 170,0 |
Output parameters of the rectifier
| № step | Voltage, В | Maximum current, А |
| I | 24±3 | 300 |
| II | 32±3 | 300 |
| III | 38±3 | 260 |
| IV | 45±3 | 220 |
| V | 52±3 | 190 |
| VI | 66±4 | 150 |
| VII | 78±4 | 125 |
Design
TheVR-300 reversible rectifieris arranged according to the modular principle in the form of installed on floor metal cabinet (Figure 1). VR-300 reversiblerectifier(1). Frontupperfalsepanelcomprisesautomaticbreaker “NETWORK”, switch “CONTROL 1-2”, digitalindicatorsandcontrols(2). Front middle false panel, under which the cabinet screw terminal blocks for connection to the network and to the load are located (3). Front lower false panel of the cabinet, under which three-phase transformers are (4). Upper panel of the cabinet, on which fittings for cables are located (5).
Diagram of the VR-300 reversible rectifier operation