L2M226C SUPERIOR ELECTRIC, L2M226C Datasheet

L2M226C

Manufacturer Part Number

L2M226C

Description

Variable Transformer

Manufacturer

SUPERIOR ELECTRIC

Type

Variabler

Datasheets

1.L2M226C.pdf (2 pages)

2.L2M226C.pdf (2 pages)

Specifications of L2M226C

Input Voltage

120V

Output Current

3.1A

Knob Rotation

Transformer Mounting

Wall

Secondary Current Nom

3.1A

No. Of Phases

Single

Primary Voltages

120V

Power Rating

1.05kVA

Transformer Type

Variable

Brand/series

Powerstat®/L2M Series

Configuration

Housed

Current, Secondary

7.5/3.1 A

Dimensions

7-3/4"L×6-1/2"W×11-1/2"H

Frequency

50/60 Hz

Length, Cord

6 "

Mounting Type

Bench/Wall

Number Of Outlets

Outlet Connector

5-15

Phase

Power, Rating

1050 VA

Standards

cULus

Termination

Cord and Plug

Voltage, Primary

120 VAC

Voltage, Secondary

0-280 VAC

Weight

28 lbs.

Current Rating

7.5A

Output Voltage

280V

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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A POWERSTAT

The “Damage and Shortage” instructions packed with the unit outline the procedures to follow if any parts are damaged or missing.

Metered L2M Series POWERSTAT

Variable Transformers are continuously

adjustable autotransformers having a

movable brush-tap riding on a precious

metal plated commutator. Rotation of

the knob delivers any output voltage

in the range of zero to or above line

voltage. Operating characteristics

make them ideally suited for laboratory,

testing and other applications requiring

a portable source of variable AC voltage.

POWERSTAT Variable Transformers are

ruggedly designed for heavy duty use.

They provide excellent regulation with only

negligible variation in output voltage from

no-load to full-load current. Waveform

distortion is also negligible. Over 70 years

of variable transformer manufacturing

experience with rigid inspection at every

production stage in an ISO 9001:2000

certified environment assures a quality

built product.

All L2M Series POWERSTAT Variable

Transformers feature POWERKOTE Coils

for longer life, increased ratings, greater

overload capacity and better resistance to

fungus, salt spray and other contaminating

atmospheres. The precious metal plated

commutator of the coil is imbedded in a

high temperature material which holds

the windings in place even under severe

overloads. As a result, these units provide

higher output ratings per pound and per

dollar than competitive variable transformers.

MOUNTING

Although ideal for portable, benchtop or

shelf use, L2M Series units can be wall

mounted to any flat surface having a total

thickness of ½-inch or less. Using the

template (reverse side), locate and drill the

four No. 10 clearance holes. Using the four

thread forming screws provided, insert them

thru the flat mounting surface and then into

the holes on the back of the L2M Series unit.

Variable Transformer is a precision product packed with care. Examine it carefully for any shipping damage when unpacking.

Installation/Operation/Maintenance

UL and cUL listed

for US and Canada

under file E15506

POWERSTAT

INSTALLATION

Input connection is through a grounded

NEMA 5-15 line cord approximately 6 feet

long. Output connection is by means of a

NEMA-style receptacle, 5-WAY® Binding

Posts or a combination of both. Regardless

of the method of output connection, the

total output current rating of the unit must

not be exceeded. Polarity of the circuit is

maintained from input to output, therefore

the polarity of the receptacle is always

correct. Polarity of the 5-WAY Binding

Posts is black for line, white for neutral

and green for ground. Output metering

is provided by separate analog voltmeter

and ammeter having accuracies of ± 3%.

OPERATION

Connections and controls on L2M Series

units are designed for easy operation.

1. Be sure the main power switch is in the

2. Insert the input cord and plug assembly

3. Plug the load(s) into the receptacle and/

4. Place the main power switch in the “ON”

In many test applications, it is advisable to

turn power on with the output knob set at the

zero position. This permits monitoring of

the load current by the front panel ammeter

as voltage is increased to safeguard against

potential shorts or miswiring in the load.

with POWERKOTE

“OFF” or “O” position.

into a receptacle of the proper voltage

and frequency.

or 5-WAY Binding Posts provided on the

front of the unit. Be certain the load or

total of the loads does not exceed the

current rating of the unit.

or “I” position. The brightly colored “ON”

indicator of the rocker style thermal

magnetic circuit breaker power switch

will become visible and the voltmeter

reading will match the output knob

position indicated by the front panel

markings. A switch guard protects from

accidental switching. Voltage increases

with a clockwise turn of the knob. The

voltage level can be monitored using the

voltmeter provided on the front panel.

Variable Transformers

Metered L2M Series

INSPECTION

Coils

CIRCUIT PROTECTION

Circuit protection is provided on the unit

input and output by a thermal magnetic

circuit breaker incorporating two poles.

One pole is connected to the input line and

the other to the output line. This configu-

ration protects the unit from catastrophic

overloading conditions which include

substantial output overloads in the current

derated portion of 0 to 280 VAC models

(140-280 VAC).

ENVIRONMENTAL

To m e e t cu rr e n t ra t i n g s , a v e r a g e

operating ambient temperature for any

24-hour period should not exceed 30°C

(86°F) with maximum temperature not

to exceed 40°C (104°F). When oper-

ated at higher temperatures, output

current must be reduced as follows:

Maximum Ambient Load Derating Factor

The units can be operated in ambient tem-

peratures below -20°C (-4°F) but there is

a danger of mechanical freezing. Storage

ambient temperatures are -40°C to 70°C

(-40°F to 158°F).

MAINTENANCE

Except for the possible replacement of a

brush assembly, a POWERSTAT Variable

Transformer should not require servicing

if the ratings of the unit are not exceeded.

Normally, brushes last for the life of the

unit. They should be inspected periodi-

cally by removing the cover and replaced if

badly worn. Use only the correct Superior

Electric replacement brush assembly listed

because they contain special materials to

attain proper operation.

50°C (122°F)

55°C (131°F)

60°C (140°F)

65°C (149°F)

70°C (158°F)

L2M116C

L2M216C

L2M126C

L2M226C

TYPE

REPLACEMENT BRUSH ASSEMBLIES

065431-001

065431-002

122819-001

122819-002

PART NO.

on all products is reserved.

engineering refinements

Dimensions and other

details are subject to

Compliant Quality Management System

Manufactured Under an ISO9001:2000

The right to make

90%

83%

75%

65%

52%

DESCRIPTION

change.

RB116C

RB216C

RB126

RB226

Related parts for L2M226C

L2M226C Summary of contents

Page 1

... Use only the correct Superior Electric replacement brush assembly listed because they contain special materials to attain proper operation. REPLACEMENT BRUSH ASSEMBLIES TYPE PART NO. DESCRIPTION L2M116C 065431-001 RB116C L2M216C 065431-002 RB216C L2M126C 122819-001 RB126 L2M226C 122819-002 RB226 ...

Page 2

... STEP-UP. Types L2M216C and L2M226C are wired to a lower input voltage tap that permits operation from a 120 VAC input source to obtain an output voltage of 0-280 V. Because of the increased copper loss in the voltage boost section of the winding, the output current must be reduced according to Figure A whenever the output exceeds 125% of the output voltage. 28 SPRING LANE • ...

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