Download Power Transformers Specs | Plitron

Power Transformers Specs
Specs shown on this page are common to Plitron Standard Power Transformers
Description
117 VAC – 60 Hz | 2 x 115 VAC 50-60 Hz | 2 x 0-100-120 VAC 50-60 Hz
The Standard Power Transformer Line of toroids is characterized
by its tight regulation, for applications where off load voltages are
a concern; and very low temperature rise, which is useful for high
ambient operating conditions, or where instantaneous power – in
excess of rating – is required. Dual inputs (115/230 VAC) are
standard, as are potted centers and stranded leads. Plitron
makes a broad range of high quality, approved, toroidal
transformers. Designed for general purpose applications. Three
separate primary input configurations are shown on this site.
Standard Primary Input Configurations
Input VAC
1
2
3
Description
North American,
Single 117 V
European, Dual x
2 x 115
115 V
Global, 2 x 120 V
2 x 0-100-120
tapped at 100
117
Code
A
7
5
F Compatible With Inputs
60 117
50Series / Parallel Connection for 115 or 230
60
50- Series / Parallel / Tapped Connections for 100,
60 120, 200, 220, or 240 VAC
Mechanical
Power Weight Nominal Dimensions (mm)
VA
kg
A
B
C
D
15
0.35
63
33
5
6
30
0.45
70
33
5
6
50
0.90
80
38
5
6
80
1.00
97
35
5
6
120
1.18
95
43
6.35
10
160
1.82
110
45
6.35
10
225
2.18
110
50
6.35
10
300
2.90
110
57
6.35
10
400
4.00
125
66
10
10
500
4.50
135
63
10
19
625
5.00
145
78
10
19
750
5.50
150
80
10
19
1000
6.32
160
80
12.7
19
1500
11.68
200
75
12.7
25
E
350
350
350
350
350
350
350
350
350
350
350
350
350
350
F
26
26
26
26
26
35
35
35
44
44
44
44
44
44
G
16
16
16
16
16
19
19
19
22
22
22
22
22
22
Part Number Selection
The selection chart is an aid to building a PLITRON part number. Part number
listings by power level are available in the Ratings Table. The example, shown
below, part number 087026201, describes a 500VA toroidal transformer with a
dual input (115/230 VAC), 2 x 40 VAC outputs (at 6.25 A each), a potted and
drilled center, and stranded leads. * Options. Subject to minimum order.
H
4
4
4
4
4
5
5
5
8
8
8
8
8
12
Tolerances and General Specs
Inputs
Three input configurations are offered. The standard input is dual 115 VAC windings (Type 7), parallel
connected for 115 VAC, or series for 230 VAC at 50 / 60 Hz. Optional input type A is a single 117 VAC
winding at 60 Hz. Type 5 is an optional 6 wire input, dual 0-100-120 VAC windings, series or parallel
connected for 100, 120, 220 or 240 VAC at 50 / 60 Hz. See schematics for more details.
Insulation
Primary to secondary: Polyester tape, class B (130°C). 50 Hz transformers, four layers minimum. Meets
the test requirement of >4 kV for one minute. 60 Hz transformers, three layers minimum, >2.5 kV for one
minute. Interwinding secondary (where required) and outer insulation: Polyester tape, two layers
minimum.
Temperature Rise
Maximum 50°C. At maximum rated load, continuous.
Outputs
See ratings table for output voltage and current ratings. Dual secondaries are bilfilar wound where
possible for optimum coupling, and theoretically perfect balancing. Output Tolerance – Better than 3% at
full load.
Load Regulation
See ratings table. Figures given are for 60 Hz operation, for 50 Hz operation figures increase slightly.
Mounting
All units in this series are supplied with a potted center and an integral neoprene washer base. The potting
compound is UL-HB approved, or better. Alternate mounting: supplied with steel cup disk, 2 neoprene
washers, a bolt, nut and flat washer. See mechanical table for details.
Leads
Standard: Stranded tinned copper wire (CSA TEW, UL-1015, 105°C). Stripped 6 mm. Finished length: 350
mm. Optional: Magnet wire self lead, PVC sleeved .031” wall. Stripped 6mm. Finished length: 200 mm.
Thermal Protection
Optional: Normally closed thermal switch in series with primary, auto resetting , or a one shot thermal
fuse. In series with primary for 60 Hz transformers. Separate lead outs for 50 Hz units, insulated stranded
wire(yellow). Both open at 120°C core temperature. UL, CSA listed components.
Electrostatic Screen
Optional: To reduce capacitive coupling, and/or create a physical barrier, between primary and secondary.
Copper foil laminated between polyester tape. Wound over primary. Terminated at one end by insulated
stranded wire (green/yellow).
Magnetic Shielding
Optional:
To attenuate stray magnetic fields. Multiple layers of grain oriented silicon steel laminated between
insulation. Wrapped around circumference of transformer. Increases OD by approx. 1mm.
Options
Options (Type A and type 5 primaries, screens, shields, solid wire leads, and thermal protection) are
subject to a minimum order of ten units.