291 Staco Energy Products Company, 291 Datasheet - Page 2

• Manufacturer Part Number: 291
• Description: Transformers TRANS VAR 0-120V 3A
• Manufacturer: Staco Energy Products Company
• Type: Variable Transformersr

Specifications of 291

• Dimensions: 2.31 in L x 2.93 in W x 3.28 in H
• Product: Variable Transformers
• Height: 3.28 in
• Length: 2.31 in
• Width: 2.93 in
• Input Voltage: 120V
• Output Current: 3A
• Knob Rotation: CW / CCW
• Transformer Mounting: Panel
• Secondary Current Nom: 3A
• No. Of Phases: Single
• Primary Voltages: 120V
• Mounting Type: Panel
• Power Rating: 0.36kVA
• Constant Current Load: 3A
• Rohs Compliant: Yes
• Current Rating: 3A
• Leaded Process Compatible: No
• Output Voltage: 120V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

100/200 Series
These manually operated panel mounted units are available in
single and three phase models from 0.8 to 3.0 amperes. The
171, 201, 221-B and 291 units operate from 120 volt input,
while the 252 unit operates from a 240 volt input. STACO’s coil
tapping arrangement permits an output voltage from 0 to line
3PN221B
PART NO.
221-B-2
221-B-3
221-B
171-2
171-3
201-2
201-3
252-2
252-3
171
201
252
WIRING
Delta π
Delta π
Delta π
Delta π
Single
Phase
Single
Phase
Series
Phase
Phase
Wye π
Single
Phase
Single
Phase
Series
Phase
Phase
Wye π
Single
Phase
Single
Phase
Series
Phase
Phase
Wye π
Single
Phase
Single
Phase
Single
Phase
Series
Phase
Phase
Wye π
Three
Three
Three
Three
Three
Three
Three
Three
Open
Open
Open
Open
VOLTS
120++
240++
120++
240++
120++
240++
240++
480++
120
240
120
240
120
240
120
240
480
INPUT
HERTZ
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
50/60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
60
VOLTS
0-120
0-132
0-240
0-264
0-120
0-132
0-240
0-120
0-132
0-240
0-264
0-120
0-132
0-240
0-120
0-132
0-240
0-264
0-120
0-132
0-240
0-132
0-240
0-264
0-480
0-528
0-240
0-264
0-480
0-528
AMPS
MAX
1.75
1.75
1.75
1.75
1.75
1.75
1.75
2.50
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.5
2.5
2.5
2.5
2.5
2.5
2.5
0.8
0.8
0.8
0.8
0.8
0.8
0.8
0.8
CONSTANT
CURRENT
LOAD
OUTPUT
MAX
KVA
0.21
0.23
0.42
0.46
0.36
0.40
0.73
0.24
0.26
0.48
0.53
0.42
0.46
0.83
0.30
0.33
0.60
0.66
0.52
0.57
1.04
0.33
0.19
0.21
0.38
0.42
0.33
0.37
0.67
0.73
AMPS
MAX
2.2
2.2
2.2
2.2
2.5
2.5
2.5
2.5
3.2
3.2
3.2
3.2
1.0
1.0
1.0
1.0
—
—
—
—
—
—
—
—
—
—
—
—
—
–
–
IMPEDANCE
CONSTANT
voltage in either the clockwise or counterclockwise direction
and from 0 to 10% above line voltage in the clockwise direc-
tion. Two and three ganged, manually operated units are avail-
able for increased single phase voltage ratings and for three
phase applications.
LOAD
MAX
0.26
0.53
0.46
0.92
0.30
0.60
0.52
1.04
0.38
0.77
0.67
1.33
0.24
0.48
0.42
0.83
KVA
—
—
—
—
—
—
—
—
—
—
—
—
—
–
–
INCREASE
ROTATION
VOLTAGE
SHAFT
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
CCW
FOR
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
LINE CORD & RECEPTACLE
2-1-2
1-2-1
4-1-4
2-2-2
1-1-1
2-1-2
1-2-1
4-1-4
2-2-2
1-1-1
2-1-2
1-2-1
4-1-4
2-2-2
1-1-1
2-1-2
1-2-1
4-1-4
2-2-2
1-1-1
4-4-4
TERMINAL CONNECTIONS
Input
1-2
1-2
1-4
2-2
1-1
4-4
1-2
1-2
1-4
2-2
1-1
4-4
1-2
1-2
1-4
2-2
1-1
4-4
1-2
1-2
1-4
2-2
1-1
4-4
As Viewed from Base End
(For increasing Voltage)
Jumper• Output
1-1-1
2-2-2
1-1-1
2-2-2
1-1-1
2-2-2
1-1-1
2-2-2
1-1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
1-1
2-2
1-1
—
—
—
—
—
—
—
—
—
—
—
—
3-1-3
3-2-3
3-1-3
3-3-3
3-3-3
3-1-3
3-2-3
3-1-3
3-3-3
3-3-3
3-1-3
3-2-3
3-1-3
3-3-3
3-3-3
3-1-3
3-2-3
3-1-3
3-3-3
3-3-3
3-3-3
1-3
2-3
1-3
3-3
3-3
3-3
1-3
2-3
1-3
3-3
3-3
3-3
1-3
2-3
1-3
3-3
3-3
3-3
1-3
2-3
1-3
3-3
3-3
3-3
(Pg 8 & 9)
SCHE-
MATIC
1 & 5
1 & 6
1 & 4
1 & 5
1 & 6
1 & 4
1 & 5
1 & 6
1 & 4
1 & 5
1 & 6
1&4
1
1
1
3
1
LBS.
4 1/4
4 1/4
6 1/2
4 1/4
4 1/4
6 1/2
2 1/2
5 1/2
5 1/2
8 1/4
2 1/2
5 1/2
5 1/2
8 1/4
NET
WT.
2
2
3