Download L650 Transformer Spec Sheet

Drawing No: 26M663
Page 1 of 4
TECHNICAL SPECIFICATION
Part No:
Effective: 03 Nov 2003
PWR SUPPLY TRANSFORMER, TOROIDAL
Revision: A
1.0
Filename: 26M663A.DOC
SCOPE
This technical specification describes a toroidal power transformer for use in a bridge rectifier circuit
followed by a capacitive input filter.
2.0
ELECTRICAL
Primary:
The primary will consist of two windings, one tapped and one untapped, allowing for connection to a
primary line of 100, 120, 220 or 240 V AC, 50/60 Hz using a Corcom model 5EFM4S power entry
module or equivalent. See fig. 1 and 2.
The transformer will function properly with a 10% variation in the above nominal line voltages.
Secondary:
There will be one center tapped secondary, approximately 70 V AC (35 V AC each half), with actual
windings based on the voltage and current requirements below (see fig. 1).
At nominal line voltage, in the configuration shown in fig. 1, the following minimum requirements for DC
current and voltage will be met:
Load Current
DC voltage out
1.1 A
45 V min
0.1 A
53 V max
HIGHLAND TECHNOLOGY, INC. 320 Judah Street San Francisco, CA 94122 (415) 753-5814
2003 HIGHLAND TECHNOLOGY, INC.
Drawing No: 26M663
TECHNICAL SPECIFICATION
Part No:
Effective: 03 Nov 2003
PWR SUPPLY TRANSFORMER, TOROIDAL
Revision: A
3.0
Page 2 of 4
Filename: 26M663A.DOC
MECHANICAL
Leads:
All primary and secondary leads will be stranded #16 AWG, length 12 inches minimum, colors as
shown in fig. 1.
All leads will exit the transformer along the outer diameter and will all be oriented in one sense parallel
to the axis of rotational symmetry of the toroid.
Temperature Rise:
Temperature on any surface of the transformer will not exceed 75 C after one hour under maximum
normal load (1.1 A), with natural convection only.
Dimensions:
Height H will not exceed 2.40 inches.
Outside diameter OD will not exceed 3.40 inches.
Inside diameter ID will not be less than 0.50 inches.
Mounting:
Mounting is with one bolt through the center of the toroid.
HIGHLAND TECHNOLOGY, INC. 320 Judah Street San Francisco, CA 94122 (415) 753-5814
2003 HIGHLAND TECHNOLOGY, INC.
Drawing No: 26M663
TECHNICAL SPECIFICATION
Part No:
Page 3 of 4
Effective: 03 Nov 2003
PWR SUPPLY TRANSFORMER, TOROIDAL
Revision: A
Filename: 26M663A.DOC
FIG 3
4.0
COMPLIANCE
Standards:
The transformer will be designed to meet the requirements of UL 506 and of IEC 950 and will employ
Class F construction or better.
Overload Test:
With the primary connected for 120 V AC operation, and with 120 V AC applied, and with the
secondary loaded so that the primary input current is 0.75 A, transformer temperature will not exceed
155 C.
HIGHLAND TECHNOLOGY, INC. 320 Judah Street San Francisco, CA 94122 (415) 753-5814
2003 HIGHLAND TECHNOLOGY, INC.
Drawing No: 26M663
TECHNICAL SPECIFICATION
Part No:
Effective: 03 Nov 2003
PWR SUPPLY TRANSFORMER, TOROIDAL
Revision: A
5.0
Page 4 of 4
APPROVALS
Drawn:
Tom Jewell 11/03/03
Checked:
Approved:
Released:
HIGHLAND TECHNOLOGY, INC. 320 Judah Street San Francisco, CA 94122 (415) 753-5814
2003 HIGHLAND TECHNOLOGY, INC.
Filename: 26M663A.DOC