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Member Since 10 Years
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Application
Isolating transformer are used in Air Field Lighting system and provide isolation between the primary high voltage series circuit and low voltage secondary circuit. The primary of all transformers are connected in series and fed by constant current regulator. Secondary feeds the individual Airport Runway light.
Isolating Transformer are used to maintain continuity of high voltage primary circuit in case one or more lamps are not in working order and to maintain the supply of 20 Amps. From the 6.6 amps. Series circuit or vice – versa alternatively to supply 6.6 Amps. From 8.3 amps . in the series circuit.
The Toroidal magnetic core made from cold rolled silicon steel, grain oriented lamination of low loss quality. The core is insulated by nylon cap or polyster paper.
The primary and secondary windings are of standard quality super enamailed copper wire.
The primary is a single core made from annealed, tinned, copper wire, EPR insulated and PCP sheathed, suitable for 5000V operations .One secondary, cable end is moulded with plug and other with receptacle as per Customers, s requirement.
The secondary is two core made of annealed, tinned, copper wire, ERP insulated and PCP sheathed. The secondary cable end is moulded with receptacle as per reqirement of the customers.
The isolating transformer is epoxy casted and cured under vaccum.
The Epoxy casted assembly is rubber moulded to with – stand outdoor exposure, immersion in water or direct burial in earth containing concentration of oil, acids and alkalies.
Quality ControlBidal has complete in house facility to test incoming materials which go in the manufacture of the isolating transformer. In the process quality control is supervised by highly qualified and experienced engineering staff . each and every isolating transformer leaving the factory is thoroughly tested for routine and type tests.
PerformanceThousands of Bidal make isolating transformers are satisfactorily working in the field for years.
| PRIMARY | SECONDARY AMPERES | SECONDARY | ||||||
| Watt | Amperes | Power Factor Percent | Effici-Ency | Full Load | Short Circuited | Load Ohms | Max Open Circured Vol-Rms | Type No. |
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) |
| 45 | 6.6 | 95 | 80 | 6.53-6.7 | 6.6-7.1 | 1.15 | 25 | BE-1 |
| 45 | 20.0 | 95 | 80 | 6.53-6.7 | 6.6-7.1 | 1.15 | 25 | BE-2 |
| 45 | 8.3 | 96 | 81 | 6.47-6.73 | 6.66- 6.94 | 1.03 | 13 | BE-3 |
| 65 | 8.3 | 96 | 84 | 6.47-6.73 | 6.66- 6.94 | 1.49 | 19 | BE-4 |
| 65 | 6.6 | 95 | 80 | 6.53-6.70 | 6.6-7.1 | 1.60 | 30 | BE-5 |
| 100 | 6.6 | 95 | 85 | 6.53-6.70 | 6.6-7.1 | 2.44 | 70 | BE-6 |
| 100 | 20.0 | 95 | 85 | 6.53-6.70 | 6.6-7.1 | 2.44 | 70 | BE-7 |
| 200 | 8.3 | 96 | 88 | 6.47-6.73 | 6.66-6.94 | 4.60 | 60 | BE-8 |
| 210 | 6.6 | 95 | 90 | 6.53-6.70 | 6.6-7.1 | 4.82 | 100 | BE-9 |
| 210 | 20.0 | 95 | 90 | 6.53-6.67 | 6.6-7.1 | 4.82 | 100 | BE-10 |
| 300 | 6.6 | 95 | 90 | 19.8-20.2 | 20.0-22.0 | 0.90 | 70 | BE-11 |
| 300 | 20.0 | 95 | 90 | 19.8-20.2 | 20.0-22.0 | 0.90 | 70 | BE-12 |
| 300 | 6.6 | 95 | 90 | 6.53-6.67 | 6.6-7.1 | 8.25 | 135 | BE-13 |
| 300 | 20.0 | 95 | 90 | 6.53-6.67 | 6.6-7.1 | 8.25 | 135 | BE-14 |
| 500 | 6.6 | 95 | 90 | 19.8-20.2 | 20.0-22.0 | 1.35 | 70 | BE-15 |
| 500 | 20.0 | 95 | 90 | 19.8-20.2 | 20.0-22.0 | 1.35 | 70 | BE-16 |
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