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Present activities: Manufacturing of
Energy Meters
Product specifications: 230V mains transformer, mechanical, electrical
specifications given below
Payment terms: As per company rules
Price range: Please offer your best price
Quantity required: 1500k (1.5 million) pieces per year
SUPPLY SPECIFICATION
Mains Transformer 230V
MECHANICAL & ELECTRICAL FORMAT
1.0 Figure 1. Outline Drawing
PCB Pins 0.6mm dia
Pin Length 5.0mm
Required Hole Size 1.0mm
1. TEST
Figure 2. Connections
2.
SPECIFICATION1.1 Rdc. SPC as required. Max @ 20°C
1.2 O/C Test
1.2.1 In Large/Small Card Power Pins 2-4: O/C test Imag @ 205V AC, 50Hz = 16mA, Pins 6-7: V1
PCA = 11.7
1.2.2 Stand Alone Pins 2-4: O/C test Imag @ 205V AC, 50Hz = 12mA, Pins 6-7: V1 = 11.7
± 0.5V, Pins 8-9: V2 = Pins9-10: V3 = 23.8V ± 1.0V1.3 Flash test Pri to all secs. No breakdown allowed for 10 seconds @ 4kV, 50Hz
1.4 Insulation resistance = 10Mohm min. @ 500V DC between pri & sec1: sec2 & 3
1.5 Typical Winding Resistance (for guidance only), Table 1.
Table 1. Typical Winding Resistance
|
Pins |
Measured Resistance (Typical Values) |
|
2-4 |
1573 W |
|
4-5 |
Thermal fuse 120°C/1A |
|
6-7 |
13 W |
|
8-9 |
114 W |
|
9-10 |
123 W |
2. SPECIFICATION
| 22.1 2.1 Nominal Voltage Rating - Primary | 230V |
|
22.21.2.1.1 1 Nominal Secondary Outputs (no load)Under Load |
Secondaries: 0-22132V, 0-22V @ 0.125Aand, 254-0-245V @ 0.03A Primary Winding
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2.2.2 Open Circuit Secondaries |
Secondaries: 0-12.7V, 25-0-25V
|
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2.2 Input Voltage Range |
0-28864V
|
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2.3 VA Rating |
0.353VA
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2.4 Frequency |
50Hz ± 105%
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2.5 Typical Load Regulation |
Better than 4525%20%
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2.6 Lamination stack |
The mechanical construction may use wWelded-seam, Ccrimped-seam or Iinterleaved seam.
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2.7 Materials |
Flame retardant to UL94V-0
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2.8 Constraints |
The assembly must be mechanically robust and must not produce audible noise. over 40-60Hz.
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2.9 Temperature Range |
Based on IEC721-3-, table 1
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2.9.1 Operating Range |
-10°C to +65°C
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2.9.2 Limit Range of Operation |
-20°C to +75°C
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2.9.3 Limit Range for Storage |
-25°C to +75°C
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2.9.4 Max.Temperature Rise |
25°K @ Tamb = 440°C to IEC 62052-111036 7.25.4.5
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2.10 Damp Heat Range |
6 cycles from 25-40°C at 95% r.h.
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2.11 Life Expectancy |
175132000 hours @ Tamb = 640°C.
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2.12 Package |
Packed in containers so that the components, particularly connection pins, are not susceptible to damage during transportwill. not damage.
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2.13 Solderability |
Connection pins Mmust tin well when immersed in 60/40, tin/lead solder @ 230 ±10°C for 5 seconds duration.
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2.14 Resistance to Solder Heat |
Must not be damaged or degraded when subjected to immersion in tin/lead @ 260 ±5°C for 10 ±1 second as per BS2011 pt 2.1.T
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2.15 Extent of Solder |
Must be capable of being tinned to within 1mm of the pin root.
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2.16 Wave Solder Process |
Components must not be damaged as a result subjection to process specified in IPC-A-610.
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2.17 2.17 Shelf Life 2.18 Magnetising current |
12 Months in original package. At 205205V, 50Hz, 712mA maximum. At 230V, 50Hz, 169mA maximum |
3. INSPECTION AND TEST
|
3.1 Sampling |
Sample to BS 6001 multi-sample plan at level 2.5% A.Q.L. Sample quantity 10 units or 10% of total quantity, whichever is the greater.from a minimum of ten containers if possible.
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3.2 Physical |
Check dimensions to the mechanical outline drawing, Figure 1.
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3.3.1 Pins |
Check that the pins are straight and undamaged.
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3.3.2 Laminations
3.3.3 Shock |
Check that the lamination stack construction is adequate, particularly when crimp method is used. The transformer, when fitted to a pcb, shall withstand a half-sine shock of 530g peak with duration of 18ms, method according to IEC 60068-2-27.
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3.3 Corrosion |
Check that the transformer assembly is free from dust and dirt, and protected by varnish against corrosion / rusting by submitting samples to test atmosphere at 100% R.H. with dew formation twice daily for 28 cycles.
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Solderability |
Check that the pins will solder to within 1mm of the pin root.
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3.4 Connections |
Check that the terminations are clean and bright.
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Output Voltages |
Check that all output voltages meet specification at 205V AC, 50Hz input
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3.57 Insulation Properties |
Check the insulation between primary and secondary will withstand 4.5kV AC, 50Hz for 610 seconds, trip current level 10mA.
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3.68 Thermal Fuse Operation |
TCheck that the thermal fuse shall operates followingduring an 415V over-voltage test.test where a mains voltage of 415V is applied for 12 hours at 40 ° C. No significant overheating or explosions etc. are permitted and no damage shall be sustained by the transformer during the test. The transformer shall meet its insulation test requirement after the test.No damage shall be sustained to the transformer windings after the test.
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3.7 Electrical Safety Requirements |
The component shall meet the relevant electrical safety requirements of EN60742 or then EN61558 when it supersedes EN60472.IEC 62052-11 7.3.1, 7.3.3, 5.6 and 7.3.2(Impulse amplitude for communication circuits). |
3.8 D.C. Resistance As Table 1
Table 1. Typical Winding DC Resistance (guidance only)
| Pins | Measured DC Resistance ((Typical Values) |
| 2-41-2 | 12k1573 W |
| 4-53-4 | 400W Thermal fuse 120°C, 230V, 1A |
| 6-75-6 | 40013 W |
| 8-9 | 114 W |
| 9-10 | 123 W |
3.9 Magnetising current
3.10 Secondary voltages
(152V sec. loads = 1285.7 ohms each 96 ohms, 48V load = 1600 ohms)
3.11 Flash test Primary to all secondaries. No breakdown allowed for 610 seconds @ 4.5kV, 50Hz, trip current level 10mA.
3.12 Insulation resistance 10Mohm minimum @500V D.C. between primary and secondary 1 and between secondary 2 and 3.
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