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Unregulated Open Frame DC Power Supplies
Series: BVU

Specifications Standard Models Schematics Mechanical Drawings Dimensions

Datasheet PDF

Unregulated Open Frame DC Power Supplies

Low cost unregulated DC power supplies
Field selectable input taps 103/115/126/207/230/253 VAC for fine-tuning output to match actual field conditions
Improved ripple - 3% maximum
Fuse protected output
Computer grade capacitors
Floating output provides versatility for wiring
Safty Agency Approvals BVU Series:
   -UL 1950, third edition, File #E181899
   -CSA, C22.2 No.950, File #E181899
   -CE Marked

The BVU Series of unregulated DC power supplies is the best low cost alternative, where moderate output variations and AC ripple are acceptable. The field selectable input taps allow fine tuning the output voltage to match actual field conditions. The DC output is fused for short circuit protection. For maximum versatility, the output is floating and may be referenced to another low voltage common ground or placed in series with other DC power supplies.

Applications

DC Motors - Stepping and Servos
Solenoid values
Relays
Lamps and Signal Systems
Input to 3-terminal on-board regulators
Some Floppy Disk Drives

Specifications

AC input:
115/230VAC, 50/60Hz nominal.
Field selectable taps for ±10%. High line tolerance on voltage is +10%
DC Output:
Floating fixed output at full load ratings (see table). Transformer taps provided for approx. 10% output voltage adjustment.
Ripple:
3% rms maximum at normal line and full rated load
Operating Temperature:
0-50°C(Derate 2% per °C to 70°C)
Overload and Short Circuit Protection:
Fused output. It should be noted that the fuse is not necessarily direct in line with the output. In most models the fuse is prior to the output capacitor and in case of a short circuit, the capacitor energy will be discharged into the load even if the fuse has opened.

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Schematics

Schematic shows transformer taps provided for approx. +/-10% output voltage adjustment. Typical full load output voltage at 115VAC input using taps 1 and 3. For 10% higher output voltage use taps 1 and 2. For 10% lower output voltage use taps 1 and 4.
BVU schematic

Tap
(VAC) Nominal
(VAC) High Line
(VAC)

115, -10% 103.5 113.9

115, NOM 115 126.5

115, +10% 126.5 139.2

230, -10% 207 227.7

230, NOM 230 253.0

230, +10% 253 278.3

Input Connections For BVU series

Input
(VAC) 103.5 115 126.5 207 230 253

Jumper 1-5
2-6 1-5
3-7 1-5
4-8 2-5 3-5 4-5

Input
Apply 1-2 1-3 1-4 1-6 1-7 1-8

Fuse
AT See Unit ID Lable

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Mechanical Drawings Datasheet PDF

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Dimensions

Case
Size A Bo B1 C D E F G H(dia) Wt
(lbs)

AU 4.62 4.00 NA .31 2.09 1.60 .31 2.75 .20 1.7

BU 5.88 5.38 NA .25 2.72 2.19 .31 3.25 .22 2.6

CU 6.25 5.65 5.15 .25 3.00 2.73 .35 3.71 .22 4.0

DU 7.12 6.42 5.87 .35 3.25 2.88 .30 4.00 .22 6.7

EU 8.10 7.50 6.90 .25 3.88 3.80 .30 5.00 .26 12.2

FU 9.00 8.24 8.24 .35 4.62 2.50 1.56 5.62 .28 20.0

GU 9.50 8.50 8.50 .50 5.56 6.62 .50 8.00 .28 28.5

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Standard Models

Voltage Selection Guide:
7volts 12volts 16volts 20volts 24volts 48volts 65volts 72volts 75volts 120volts 250volts

7 Volts Back
Part Number	Typical DC Output (@ nominal input and full load)
BVU-7AU1.8	7.5V @ 1.8A
BVU-7BU3	7.5V @ 3A
BVU-7CU6	7.5V @ 6A
BVU-7DU10	8.5V @ 10A
BVU-7EU20	9V @ 20A
12 Volts Back
BVU-12AU1.2	11V @ 1.2A
BVU-12BU2.4	12V @ 2.4A
BVU-12CU4.8	12V @ 4.8A
BVU-12DU7	12.5V @ 7A
BVU-12EU15	12.5V @ 15A
16 Volts Back
BVU-16AU0.9	17AV @ 0.9A
BVU-16BU1.8	16V @ 1.8A
BVU-16CU3.6	16V @ 3.6A
BVU-16DU6	17V @ 6A
BVU-16EU12.5	16.5V @ 12.5A
20 Volts Back
BVU-20AU0.75	19.8V @ 0.75A
BVU-20BU1.5	19.8V @ 1.5A
BVU-20CU3	19.8V @ 3A
BVU-20DU5	19.48V @ 5A
BVU-20EU10	20V @ 10A
24 Volts Back
BVU-24AU0.6	25V @ 0.6A
BVU-24BU1.2	26.5V @ 1.2A
BVU-24CU2.4	26.5V @ 2.4A
BVU-24DU3.5	25.5V @ 3.5A
BVU-24EU7.5	27.5V @ 7.5A
BVU-24FU20	24.6V @ 20A
BVU-24GU30	24.6V @ 30A
45 Volts Back
BVU-45EU6	45V @ 6.0A
BVU-45FU12	45V @ 12A
48 Volts
BVU-48AU0.3	48V @ 0.3A
BVU-48BU0.6	48V @ 0.6A
BVU-48CU1.2	48V @ 1.2A
BVU-48DU1.8	48V @ 1.8A
BVU-48EU4	47V @ 4A
BVU-48FU10	48.4V @ 10A
BVU-48GU15	48V @ 15A
65 Volts Back
BVU-65GU15	65V @ 15A
72 Volts Back
BVU-72EU3	72V @ 3A
75 Volts Back
BVU-75FU5	75V @ 5A
BVU-75GU10	75V @ 10A
120 Volts Back
BVU-120AU0.12	113V @ 0.12A
BVU-120BU0.25	120V @ 0.25A
250 Volts Back
BVU-250AU0.05	247V @ 0.05A
BVU-250BU0.1	248V @ 0.1A

Ask for specials. Use our on-line custom transformer design form or contact us.
Custom variations are quoted and shipped promptly.

We continually improve our products, therefore specifications are subject to change without notice. PowerVolt does not assume liability arrising out of use or misuse of any product. PowerVolt does not recommend the use of its products in applications wherin a failure or malfunction may directly threaten life or cause human injury. The user of PowerVolt products assumes all risk of such use and indemnifies PowerVolt against all damages.

Case Size	A	Bo	B1	C	D	E	F	G	H(dia)	Wt (lbs)
AU	4.62	4.00	NA	.31	2.09	1.60	.31	2.75	.20	1.7
BU	5.88	5.38	NA	.25	2.72	2.19	.31	3.25	.22	2.6
CU	6.25	5.65	5.15	.25	3.00	2.73	.35	3.71	.22	4.0
DU	7.12	6.42	5.87	.35	3.25	2.88	.30	4.00	.22	6.7
EU	8.10	7.50	6.90	.25	3.88	3.80	.30	5.00	.26	12.2
FU	9.00	8.24	8.24	.35	4.62	2.50	1.56	5.62	.28	20.0
GU	9.50	8.50	8.50	.50	5.56	6.62	.50	8.00	.28	28.5