DC GENERATORS SERIES, SHUNT & COMPOUND




GENERAL INFORMATION & CONSTRUCTION DETAIL

All generators have been specifically designed to perform any kind industrial function; their mechanical dimensions are such that perfect working is guaranteed.
Generators are built with fully-laminated quadrangular stator with interpoles and, from axis height 132, they can be completed with stabilising / pole-face windings.
All the generators are realised according to the following special features:
- high power/size ratio.
- excellent dynamics response to speed variation
The windings are insulated and impregnated with class H materials, while the motor thermal exploitation is realised according to F class.

ROTOR
Rotor packages are obtained by packaging very low-loss magnetic sheets which are insulated on both sides.
Winding are made of wire or metal-strip twin-lead insulated with a class H resins and impregnated with oven-polymerised insulated varnish which guarantee the best dielectric and mechanical features.
Usually corrugated or lap windings are used.
In generators with an axis height over 200, a special winding, the so-called "frog's-foot" winding is used.
Windings are connected to the commutator either by means of electrode welding or by means of tinning with alloys able to withstand temperatures over 180C.
Winding end plates are fixed by means of fibre-glass bindings.

COMMUTATOR
With the exception of axis height 250, commutators are built for all sizes, by means of die-casting. This is done in such a way that an escape velocity much greater than the maximum motor speed is guaranteed.

STATOR
The stator magnetic circuits are obtained by means of high-pressure packaging of magnetic sheets, tightened by rivets, up to the axis height of 132.
From axis height 160, they are compacted inside an iron structure built in the workshop
. Coils wound with class H - insulated wire are impregnated with the same varnish which is used for the rotor; this process guarantees that they may be used for a long time in humid or dusty conditions.
Coils are connected with flexible wires joined together by special bands/strips able to withstand high temperatures.

CONSTRUCTION SHAPES
The construction shapes of generators are normally IM B3 or IM B5 or derivatives as per the contents of UNEL 05513 - DIN 42950 - IEC 34-7 (Code 1-2) table.


Table of Size - Power - Output Voltage
SizePower (kW)Output Voltage
80 S0,81 - 3,91On Request
80 M1,20 - 4,77On Request
80 L1,36 - 6,30On Request
90 M1,76 - 7,32On Request
90 L2,21 - 9,23On Request
90 P1,88 - 11,26On Request
100 M4,11 - 12,80On Request
100 L4,30 - 16,30On Request
100 P5,50 - 20,20On Request
112 M8,10 - 23,8On Request
112 L9,50 - 26,4On Request
112 P9,90 - 31,30On Request
132 BS11,10 - 40,60On Request
132 BM15,90 - 11,10On Request
160 S24,10 - 79,60On Request
160 M31,10 - 93,10On Request
160 L29,90 - 109On Request
160 LB37,9 - 137,5On Request
200 AK33,5 - 121,5On Request
200 AS41 - 140On Request
200 AM47 - 152On Request
200 AL56 - 159On Request
200 ALB67 - 178On Request

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