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 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 180°C.
Winding end plates are fixed by means of fibre-glass bindings.
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.
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.
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
|Size||Power (kW)||Output Voltage|
|80 S||0,81 - 3,91||On Request|
|80 M||1,20 - 4,77||On Request|
|80 L||1,36 - 6,30||On Request|
|90 M||1,76 - 7,32||On Request|
|90 L||2,21 - 9,23||On Request|
|90 P||1,88 - 11,26||On Request|
|100 M||4,11 - 12,80||On Request|
|100 L||4,30 - 16,30||On Request|
|100 P||5,50 - 20,20||On Request|
|112 M||8,10 - 23,8||On Request|
|112 L||9,50 - 26,4||On Request|
|112 P||9,90 - 31,30||On Request|
|132 BS||11,10 - 40,60||On Request|
|132 BM||15,90 - 11,10||On Request|
|160 S||24,10 - 79,60||On Request|
|160 M||31,10 - 93,10||On Request|
|160 L||29,90 - 109||On Request|
|160 LB||37,9 - 137,5||On Request|
|200 AK||33,5 - 121,5||On Request|
|200 AS||41 - 140||On Request|
|200 AM||47 - 152||On Request|
|200 AL||56 - 159||On Request|
|200 ALB||67 - 178||On Request|
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