Bowers PWAP125, Installation, Operation & Maintenance Manual

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INSTALLATION, USE AND MAINTENANCE MANUAL
EN
16 17
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
It is recommended to use a forced cooling system by Bowers Electricals Ltd
(Figure 10) specially designed to ensure proper air circulation inside each
coil of a three- or single-phase transformer. Forced ventilation can be
fitted at Manufacturer’s works or after installation of the transformer at
site. Please consult Figures 11 and 12 and Table 3 for different models
capacity and dimensions.
Model
Power range
(kVA)
� � �w
(m3/h)
A
(mm)
B
(mm)
C
(mm)
PWF1200/A 50 ~1200 1230 Till 330 225
PWF1200/B 100 – 630 ~1200 1400 340-460 225
PWF1200/C 800 – 1000 ~1200 1600 470-540 225
PWF1800/A 1250 – 1600 ~1800 1850 550-590 405
PWF1800/B 2000 ~1800 2000 600-650 405
PWF3600 2500 – 3150 ~3600 2200 660-730 545
Insula� � �oltage (kV)
Nominal voltage at
industrial frequency (kV)
Atmospheric Impulse
Voltage (kV)
Minimum air
distance (mm)
3,6 10 20 60
40 60
7,2 20 40 70
60 90
12 28 60 90
75 120
17,5 38 75 120
95 160
24 50 95 160
125 220
36 70 145 300
170 360
A
B B
C
170
129
95
A
B B
C
170
129
95
B owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail: enquiries@bowerselec.co.uk
www.bowerselec.co.uk
B owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail: enquiries@bowerselec.co.uk
www.bowerselec.co.uk
Table 3 - Forced cooling systems parameters
6.5 – INSULATION DISTANCES
While the transformer is working it is necessary to observe a minimum
distance between the active parts of the transformer, surrounding metal
elements and ancillary devices, according to IEC 60076-3 standard. Table 4
shows the minimum insulation clearances to be respected:
Table 4 - Insulation distances
Figure 10 – Tangential ventilation bar
Figure 11 – Tangential ventilation bar (front view)
Figure 12 – Tangential ventilation bar drawings (top view)
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
16 17
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
It is recommended to use a forced cooling system by Bowers Electricals Ltd
(Figure 10) specially designed to ensure proper air circulation inside each
coil of a three- or single-phase transformer. Forced ventilation can be
fitted at Manufacturer’s works or after installation of the transformer at
site. Please consult Figures 11 and 12 and Table 3 for different models
capacity and dimensions.
Model
Power range
(kVA)
� � �w
(m3/h)
A
(mm)
B
(mm)
C
(mm)
PWF1200/A 50 ~1200 1230 Till 330 225
PWF1200/B 100 – 630 ~1200 1400 340-460 225
PWF1200/C 800 – 1000 ~1200 1600 470-540 225
PWF1800/A 1250 – 1600 ~1800 1850 550-590 405
PWF1800/B 2000 ~1800 2000 600-650 405
PWF3600 2500 – 3150 ~3600 2200 660-730 545
Insula� � �oltage (kV)
Nominal voltage at
industrial frequency (kV)
Atmospheric Impulse
Voltage (kV)
Minimum air
distance (mm)
3,6 10 20 60
40 60
7,2 20 40 70
60 90
12 28 60 90
75 120
17,5 38 75 120
95 160
24 50 95 160
125 220
36 70 145 300
170 360
A
B B
C
170
129
95
A
B B
C
170
129
95
B owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail: enquiries@bowerselec.co.uk
www.bowerselec.co.uk
B owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail: enquiries@bowerselec.co.uk
www.bowerselec.co.uk
Table 3 - Forced cooling systems parameters
6.5 – INSULATION DISTANCES
While the transformer is working it is necessary to observe a minimum
distance between the active parts of the transformer, surrounding metal
elements and ancillary devices, according to IEC 60076-3 standard. Table 4
shows the minimum insulation clearances to be respected:
Table 4 - Insulation distances
Figure 10 – Tangential ventilation bar
Figure 11 – Tangential ventilation bar (front view)
Figure 12 – Tangential ventilation bar drawings (top view)
3
INSTALLATION, USE AND MAINTENANCE MANUAL
EN
APPENDIX
1.0 – REFERENCE STANDARDS
2.0 – RATING PLATE
3.0 – LIST OF COMPONENTS AND ACCESSORIES
4.0 – IMPORTANT NOTICE
5.0 – RECEIVING, HANDLING AND STORING
5.1 – RECEIVING
5.2 – HANDLING
5.3 – STORAGE
6.0 – INSTALLATION
6.1 – SITE PREPARATION
6.2 – STANDARD INSTALLATION CONDITIONS
6.3 – WORKING TEMPERATURE
6.4 – VENTILATION
6.4.1 – NATURAL / FORCED VENTILATION OF THE
INSTALLATION ROOM
6.4.2 – FORCED VENTILATION OF THE TRANSFORMER
6.5 – INSULATION DISTANCES
6.6 – SAFETY DISTANCE
6.7 – TIGHTENING TORQUE FOR ELECTRICAL & MECHNICAL
CONNECTIONS
6.8 – VISUAL INSPECTION
B owers Electricals Ltd, Heanor Gate Road, Heanor, Derbyshire DE75 7GX
Telephone: 01773 531531 (24 hours) Fax: 01773 716171
E-mail: enquiries@bowerselec.co.uk
www.bowerselec.co.uk
CAST RESIN TRANSFORMER:
Installation, Operation &
Maintenance Manual
6.5 INSULATION DISTANCES
While the transformer is working it is necessary to observe a minimum distance between the active parts of the transformer,
surrounding metal elements and ancillary devices, according to IEC 60076-3 standard.
Table 4 shows the minimum insulation clearances to be respected:
Tel: 01773 531531 enquires@bowerselec.co.uk www.bowerselec.co.uk
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