Conditional graphic designations of electrical machines. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook
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Electrical machines (GOST 2.722-68)
A. Elements of electrical machines (Table 1)
1. Winding: a) general designation; b) parallel excitation; c) sequential excitation; d) compensatory; e) auxiliary pole.
2. Stator, general designation.
3. Rotor: a) general designation, short-circuited; b) without winding hollow non-magnetic or ferromagnetic; c) without winding with pronounced poles (with slots along the circumference); d) without winding with permanent magnets; e) with a distributed three-phase winding; f) with two distributed independent windings; g) single-phase or direct current; h) external with a short-circuited distributed winding; i) with a concentrated excitation winding with pronounced poles and with a distributed short-circuited or starting winding.
4. Brush: a) on the contact ring; b) on the collector.
Brushes are displayed only when necessary. The conclusions of the stator and rotor windings in the designations of machines can be depicted from any side.
B. DC machines (Table 2)
1. DC generator, general designation.
2. DC motor, general designation.
3. Generator or DC motor with two leads: a) from a permanent magnet; b) with independent; c) with consistent; d) with parallel; e) mixed.
4. Reversible DC motor with two serial excitation windings.
5. DC generator with two outputs, with mixed, indicating clamps, brushes and numerical data, for example, 220 V, 20 kW.
B. AC machines (Table 3)
1. Alternator.
2. AC motor,
3. Collector motor: a) single-phase sequential excitation; b) single-phase repulsion; c) three-phase sequential excitation; d) three-phase parallel excitation powered through a rotor with a double row of brushes (two circles connected by short parallel lines represent two windings of the same rotor).
4. Synchronous generator (GS) or motor (MS): a) general designation; b) three-phase with from a permanent magnet; c) single-phase; d) three-phase with windings connected in a star with a neutral neutral; e) three-phase, with windings connected in a star, with neutral removed; f) three-phase, both ends of each phase are brought out.
5. Asynchronous motor: a) with a squirrel-cage rotor; b) with a phase rotor; c) single-phase with a squirrel-cage rotor and with leads for the auxiliary phase; d) three-phase, connected in a triangle, with a squirrel-cage rotor; e) three-phase, with a squirrel-cage rotor, both ends of each phase are brought out; f) three-phase with a phase rotor.
See other articles Section Electrician's Handbook.
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