291 Staco Energy Products Co., 291 Datasheet - Page 3

• Manufacturer Part Number: 291
• Description: Transformer, Var.; 0 to 120V Vo; 3A Io; 0.36kVA; 120V Vi; Panel; 50/60Hz; CW/CCW
• Manufacturer: Staco Energy Products Co.
• Type: Variabler

Specifications of 291

• Brand/series: 200 Series
• Capacity: 0.36 kVA (Max.)
• Configuration: Open Frame
• Current, Secondary: 3 A
• Dimensions: 2.38"L×2.93"D
• Frequency: 50/60 Hz
• Knob Rotation: Clockwise
• Mounting Type: Panel/Chassis
• Number Of Outlets: 1
• Phase: 1
• Power, Rating: 0.36/0.4 kVA (Constant Current Load), 0.42 kVA (Constant Impedance Load)
• Termination: Solder Lug/Quick-Connect
• Voltage, Primary: 120 VAC
• Voltage, Secondary: 0-120/0-132 VAC
• Weight: 2.5 lbs.
• Lead Free Status / Rohs Status: RoHS Compliant part

100/200 Series
•
++ Line to line voltage
π
PART NO.
291-2
291-3
291
Jumper provided in the standard common position and should be moved or removed as required.
If ganged units are used in a system that ordinarily has a common neutral or ground between source and load, the neutral or ground must be connected to the com-
mon terminals of the variable transformer assembly. If the system has no neutral, the load must be balanced or the transformers will be damaged.
WIRING
Delta π
Single
Phase
Single
Phase
Series
Phase
Phase
Wye π
Three
Three
Open
201-3
221-B
VOLTS
120++
240++
120
240
INPUT
HERTZ
50/60
50/60
50/60
Single Unit
60
60
60
60
Two and Three Gang Units
VOLTS
0-120
0-132
0-240
0-264
0-120
0-132
0-240
AMPS
MAX
3.0
3.0
3.0
3.0
3.0
3.0
3.0
CONSTANT
CURRENT
LOAD
OUTPUT
MAX
0.36
0.40
0.72
0.79
0.62
0.69
1.25
KVA
AMPS
MAX
3.5
3.5
3.5
3.5
—
—
—
120V
IMPEDANCE
CONSTANT
LOAD
MAX
0.42
0.84
0.73
1.45
KVA
—
—
—
INCREASE
ROTATION
VOLTAGE
SHAFT
CCW
CCW
CCW
CCW
View from
Base End
FOR
CW
CW
CW
CW
CW
CW
CW
2-1-2
1-2-1
4-1-4
2-2-2
1-1-1
TERMINAL CONNECTIONS
Input
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
2-2
1-1
1-1
2-2
1-1
—
—
—
240V
3-1-3
3-2-3
3-1-3
3-3-3
3-3-3
1-3
2-3
1-3
3-3
3-3
3-3
221-B-2, 252-2
221-B-3, 252-3
221-B, 252
171-2, 201-2
171-3, 201-3
171, 201
TYPE
TYPE
291
291-2
291-3
(Pg 8 & 9)
SCHE-
MATIC
1 & 4
1 & 5
1 & 6
1
1.88” [47.6]
2.12” [54.0]
2.31” [58.7]
4.66” [118.3]
7.38” [187.2]
5.16” [131.0]
8.12” [206.4]
5.59” [142.1]
8.81” [223.8]
A
B
2 1/2
5 1/2
5 1/2
8 1/4
LBS.
NET
WT.