STAR ELECTRIC COMPANY

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Loraine Logan
5 years ago
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1 STAR ELECTRIC COMPANY

2 STECO manufacturers a complete range of Energy Efficient Mors conforming IS: 325. Efficiency class Improved efficiency PRODUCT RANGE International Standards , Rotating Electrical Machines- Rating and Performance, Degrees of Protection. Dimension and output ratings of Rotating Electrical machines. Type Improved efficiency size L ELECTRICAL FEATURES Operating Conditions Standards All mors comply with following Indian and International standards. Supply Conditions (Voltage & Frequency) Voltage : 415 V ± 10% Frequency : 50Hz ± 5% Combined variation : ± 10% IS:325 IS:900 IS:1231 IS:2223 IS:4029 IS:4691 IS:6362 IS:12065 IS:12075 IS:12615 Three phase induction morsspecification Code of practice for installation and maintenance of Induction mors. Dimension of Foot mounted A.C. Induction mors. Dimension of Flange mounted A.C. Induction mors. Guide for testing Three phase Induction mors. Degree of protection provided by enclosures for Rotating Electrical Machinery. Designation of Methods of Cooling for Rotating Electrical machines Permissible limits of noise level for Rotating Electrical Machines. Mechanical Vibration of Rotating Electrical machines. Energy Efficient Induction Mors Three phase Squirrel Cage. Ambient Mors are designed for an ambient temperature 50 C. Altitude Mors are designed for an altitude up 1000m above mean sea level. Re-rating facrs The re-rating applicable under different condition of supply voltage, frequency, ambient and altitude are obtained by multiplying following facrs

3 Variation in supply Voltage & Frequency Voltage Variation % Frequency Variation % Combined Voltage & Frequency Variation % Permissible output as % of rated value ±10 ±5 ± ±12.5 ±5 ± ±15 ±5 ±15 90 Variation in Ambient & Altitude Amb. Temp. ( C) Permissible output as % of rated value Altitude above sea Level m Permissible output as % of rated value Starting Time & Duty Cycle Mors are designed for continuous (S1) duty. Other type of duty (S2 S8) can be offered on request. The mors can safely withstand 3 consecutive starts from cold condition and 2 consecutive starts from hot conditions. In applications where more severe starting conditions are encountered, a special enquiry should be made e.g. Drives with high inertia e.g. flywheel drives, eccentric presses, large fans, etc. Drives involving intermittent duty of mor with frequent starts The enquiry should be accompanied with following information: GD² and relevant speed of driven equipment Duty cycle/ sequence of operation/no. of starts/hour Speed- diagram of driven equipment Method of braking (Electrical or Mechanical) Insurance and Endurance The mors are provided with class F insulation scheme with temperature rise limited class B. The mors can be used either at ambient temperature of 55 C or overloaded continuously by 10% (service facr =1.1). The temperature rise will be still within the limits of class F. The slot insulation consists of Nomex- Polyester-Nomex (NPN). All insulation materials used are adequately resistant the action of microbes and fungi. Winding The star are wound with enamel covered copper wires and impregnated as given in Table L INS Class Class F Type of WDG wires Modified Polyester Enamel covered IMPREG. Process VPI Options Mors with class H insulation and winding with dual coat wires can be offered on request.

4 Thermal Protection (for Winding & Bearing) PTC Thermisters/thermostats, RTDs etc. can be embedded in star winding on request. Earth Terminals Two earth terminals are provided, one on the body and another in terminal box. Anti-condensation Method In order avoid condensation of water inside the mors, they can be heated by connecting a voltage 4 10% of rated voltage the mor terminals. Adequate heating is obtained with current equal 20-25% of rated mor current. Alternatively any of the methods indicated in IS: 900 for heating star winding could b adopted. Mors can also be offered with built in space heaters in frame sizes 90S and above. MECHANICAL FEATURES Enclosures: (Material & T box location) Mors are offered with following enclosure Cooling All mors are Totally Enclosed Fan Cooled (TEFC). The cooling is effected by self driven, bi-directional centrifugal fan protected by fan cover. The type of cooling is IC 411 as per IS: Mor with natural ventilation (TESC) or with forced cooled arrangement can be offered on request. Forced cooling arrangements can be provided for frame 132S and above. Cooling type Cooling Code TEFC IC 411 TESC IC 410 FORCED COOLED IC 416 Degree of Protection All mors have IP55 degree of protection as per IS: Higher degree of protection such as IP56, IP65 &IP66 can be provided on request. All flanged mors are additionally provided with oil tight shaft protection on driving end side. Enclosure Materials Terminal Box Location Cast Iron TOP 90S- 160L Cast Iron Cast Iron RHS RHS Mors of die-cast aluminum enclosures can also be supplied on request.

Bearing and Terminal Box details Noise Level Mors are designed for noise levels well below the limits specified in IS: 12065. Paint All mors are painted with acrylic paint.

Any other shade or material can be offered on request Mounting Positions Roller bearing and insulated bearing Alternatively mors with insulated bearings on NDE side can be

Others are filled with Lithium based Multipurpose Grease LL3 of Balmer Lawrie. Special high temperature grease can be provided on request.

5 Bearing and Terminal Box details Noise Level Mors are designed for noise levels well below the limits specified in IS: Paint All mors are painted with acrylic paint. Mors used in corrosive atmosphere are painted with Epoxy base paint. Any other shade or material can be offered on request Mounting Positions Roller bearing and insulated bearing Alternatively mors with insulated bearings on NDE side can be offered from frame size 132S & above on request. Grease Sealed for life bearing (2Z) are filled with grease Unirex N3-ESSO. Others are filled with Lithium based Multipurpose Grease LL3 of Balmer Lawrie. Special high temperature grease can be provided on request. Ror All mors are fitted with dynamically balanced aluminum die cast squirrel cage rors. Shaft All mors are provided with single extension in accordance with IS: The shaft material is C40 (EN8) Steel. Balancing and Vibration Rors are dynamically balanced with a half sized key in the shaft extension. All mors confirm normal class of vibration according IS:

6 TEFC 3 Phase Squirrel Cage Induction Mors size L Voltage : 415 ± 10% Ambient : 50 C Ins. Class : F Frequency : 50Hz ± 5% Duty : S1(Continuous) Temp. Rise : B Combined Variation: ±10% Protection : IP55 Table rpm (2-Pole) Output Fram e Operating characteristics at output With DOL Starting Pullout Power Facr % Efficiency Starting Kg-m Speed kw HP RPM Amps. FL 3/4L 1/2L FL 3/4L 1/2L Starting S L L S S M M M L Ror GD² kgm²

7 TEFC 3 Phase Squirrel Cage Induction Mors size L Voltage : 415 ± 10% Ambient : 50 C Ins. Class : F Frequency : 50Hz ± 5% Duty : S1(Continuous) Temp. Rise : B Combined Variation: ±10% Protection : IP55 Table rpm (4-Pole) Output Operating characteristics at output Speed Power Facr % Efficiency Starting kw HP RPM Amps. FL 3/4L 1/2L FL 3/4L 1/2L Kg-m With DOL Starting Pullout Starting S L L M S M M M L Ror GD² kgm²

8 TEFC 3 Phase Squirrel Cage Induction Mors size L Voltage : 415 ± 10% Ambient : 50 C Ins. Class : F Frequency : 50Hz ± 5% Duty : S1(Continuous) Temp. Rise : B Combined Variation: ±10% Protection : IP55 Table rpm (6-Pole) Output Operating characteristics at output Speed Power Facr % Efficiency Starting kw HP RPM Amps. FL 3/4L 1/2L FL 3/4L 1/2L Kg-m With DOL Starting Pullout Starting Ror GD² kgm² S L L M S M M L L

9 TEFC 3 Phase Squirrel Cage Induction Mors size 90S 160 L Voltage : 415 ± 10% Ambient : 50 C Ins. Class : F Frequency : 50Hz ± 5% Duty : S1(Continuous) Temp. Rise : B Combined Variation: ±10% Protection : IP55 Table rpm (8-Pole) Output Operating characteristics at output Speed Power Facr % Efficiency Starting kw HP RPM Amps. FL 3/4L 1/2L FL 3/4L 1/2L Kg-m With DOL Starting Pullout Starting Ror GD² kgm² S L L L M S M M L

PARTNER ALTERNATORS LSA 40-4 Pole

23 kva - 50 Hz 12,5 28 kva - 60 Hz 4250 en - 2011.03 / c PARTNER ALTERNATORS LSA 40-4 Pole Electrical and mechanical data SPECIALLY ADAPTED TO APPLICATIONS The LSA 40 alternator is designed to be suitable