DRS - mains reactors
Mains reactors are most often used in the circuits of inverters of electric drives to limit the starting currents and to protect the mains from impulses when switching modules in semiconductor converters of electric drives.
Download the questionnaire on reactors Calculate price SEE SPECIFICATIONSThe use of mains reactors allows to produce:
- alignment of line voltages at the input of power plants with mains power distortions;
- improved power factor;
- smoothing of fast voltage changes as a result of thunderstorm overvoltage, switching of capacitor batteries, etc.;
- reduction of the rise rate and short-circuit current limiting.
Construction of the magnetic system of reactors of DRS type – bar with clearance, with magnetic core, made based on UNICORE technology with butt joint, 1 non-magnetic clearance is located in the middle windings, electrotechnical steel NV30S -120, sheet thickness is 0.3 mm.
Right-hand windings, material – aluminum. At customer's request, windings can be made of copper wire or bus.
Electrical parameters of the reactors are given in the table.
| Reactor type |
Voltage class, kV |
Inductance,mH |
Rated current, А |
| DRS-0,12-110 | 0,7 | 0,12 | 110 |
| DRS-0,07-150 | 0,7 | 0,07 | 150 |
| DRS-0,075-180 | 0,7 | 0,075 | 180 |
| DRS-0,05-260 | 0,7 | 0,05 | 260 |
| DRS-0,025-500 | 0,7 | 0,025 | 500 |
Designation Type
DRS-0,025-500 – mains reactor, inductance is 0,025 mH, rated current is 500 А
| Reactor type | W | L | H | Weight |
| mm | mm | mm | kg | |
| DRS-0,12-110 | 205 | 220 | 180 | 19 |
| DRS-0,07-150 | 205 | 220 | 180 | 20 |
| DRS-0,075-180 | 280 | 250 | 210 | 25 |
| DRS-0,05-260 | 280 | 250 | 210 | 25 |
| DRS-0,025-500 | 208 | 250 | 210 | 34 |
* The following characteristics of the reactor are determined by the customer in agreement with the manufacturer.
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The service life of reactors is 20 years. The warranty period is 24 months from the date of sale, unless otherwise agreed with the customer. Reactors are impregnated in the insulating compound assembly by dipping method, or by vacuum impregnation method according to design documentation. The reactor is considered fit for operation only after passing all the points of acceptance tests.
