DR3 - three-phase general purpose reactors

DR3 - three-phase general purpose reactors

DR3- three-phase general purpose reactors – are static electromagnetic devices designed for use in AC and DC electrical circuits.
- current-limiting
- smoothing
- noise reduction
- dividing
- starting

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Description
operating conditions
specifications and prices

Dividing – for equal distribution of  the load current between parallel-connected electric motors

Construction of the magnetic system of reactors of DR3 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.

The following characteristics of the reactor are determined by the customer in agreement with the manufacturer.

Parameters of three-phase DR3 reactors.

Parameters of three-phase DR3 reactors.

Parameter Units Default Possible options
Reactor inductance mH According to Technical task According to Technical task
Rated current А According to Technical task According to Technical task
Magnetic system saturation current А Rated current According to Technical task
Tolerance of reactor inductance % 10 Any but not less than 3
Winding material   Aluminum Copper
Heat-resistance class   B F
Voltage class kV 0,7 0,4


Transformer types designation.

Example of designation:
DR3-0,14-400 – Three-phase reactor, inductance is 0,14 mH, rated is current 400 А

 

Parameter Units Default Possible options
Coupling sizes mm At discretion of the manufacturer Indicated in the questionnaire
Overall dimensions mm At discretion of the manufacturer Indicated in the questionnaire

 

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.