MAE HO/LO Series

Motorised
Variable Transformers
Single-Phase3 to 100 Amps

MAE Series - Motorised
Single Phase Variable Transformers

Motorised single-phase variable transformer assemblies, from 3 up to 100 Amps – delivering an efficient and trouble-free method of varying AC voltages with an output from zero to 117% of line voltage.

Models are available in 13 different power ratings:

3, 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 80 & 100 Amps

and support nominal input voltages of 220 to 240V (HO Range) and 110 to 120V(LO Range).

Presented as ‘Open’ style motorized variable transformer assemblies, with the compact motor drive mounted on top of the variable transformer, the systems are presented uncased. In such formats, MAE models are ideal for incorporation as component assemblies in OEM style systems.

To learn more please check out the listings below –

Proven & Endurable Design

The basic variable auto-transformer consists of a copper winding on a toroidal core of laminated, grain-oriented, silicon steel. A carbon brush, connected to an output terminal, is rotated over the length of a precision-ground, commutator track to tap off voltage at any turn from zero volts to the maximum output voltage of the winding.

Unlike a standard fixed ratio transformer, Ashley-Edison (UK) variable transformers are designed to provide an infinitely variable step-less output voltage that can be adjusted from 0 to 117% of the transformer’s nominal input voltage.

 

Design Features

High Efficiency & Excellent Regulation

In contrast to current hungry rheostats and other resistive type voltage controllers, Ashley-Edison (UK) variable auto-transformers have an extremely small power loss, delivering efficiency of 98% or better. Within the transformer ratings, our variable transformers deliver, from no-load to full-load current, negligible variation in output voltage.

Distortion Less Voltage Control

Due to the superiority of the core design and quality of the steel grade utilized, Ashley-Edison (UK) Variable Transformers provide a facsimile of the input waveform with negligible distortion – an essential feature required by many electronic applications.

Low Operating Torque

Due to the ultra-smooth commutator surface, correct and constant contact pressure of the brush on the commutator, combined with the firm positioning of the coil and internal components ensures all Ashley-Edison(UK) Variable Transformers deliver a low operating torque.

Trouble-Free Mechanical Construction for Long Life

All Ashley-Edison (UK) variable transformers are designed for heavy-duty and trouble-free operation. Built to exacting mechanical tolerances, using the finest materials available, the quality of design and build ensures minimal maintenance requirements and enhanced design life.

Negligible Maintenance

When operated in accordance with the operating instructions, the only component that may require periodic inspection and occasional replacement are the brushes. As the brushes are made of a special highly endurable carbon and the design ensures proper contact with the commutator at all times, the need for replacement is infrequent.

Straight forward Install & Use

Whether for bench use or panel mounting, installation, mounting, and use is designed to be easy. Terminals are easily accessible – screw or lug. Output, on manually operated variable transformers, is controlled by either clockwise or anti-clockwise knob rotation.

International Standards Compliance & CE Certification

All Ashley-Edison (UK) variable transformers are designed and manufactured to comply with all relevant International Standards and appropriate European Union CE Directives.

AmpsAE ModelNominal
Volts AC
kVA @ max
Output Volts
Output
Volts
Dimensions
W x H x D mm
Weight
(Kgs)
3 AmpsMAE-203-HB220V
230V
240V
0.77
0.80
0.84
0 to 257V
0 to 268V
0 to 280V
164 x 390 x 2108
5 AmpsMAE-205-HB220V
230V
240V
1.2
1.3
1.4
0 to 257V
0 to 268V
0 to 280V
164 x 390 x 2109
10 AmpsMAE-210-HB220V
230V
240V
2.5
2.6
2.8
0 to 257V
0 to 268V
0 to 280V
215 x 390 x 26014
15 AmpsMAE-215-HB220V
230V
240V
3.8
4.0
4.2
0 to 257V
0 to 268V
0 to 280V
215 x 390 x 26016
20 AmpsMAE-220-HB220V
230V
240V
5.1
5.3
5.6
0 to 257V
0 to 268V
0 to 280V
300 x 470 x 34523
25 AmpsMAE-225-HB220V
230V
240V
6.4
6.7
7.0
0 to 257V
0 to 268V
0 to 280V
300 x 470 x 34526
30 AmpsMAE-230-HB220V
230V
240V
7.7
8.0
8.4
0 to 257V
0 to 268V
0 to 280V
300 x 470 x 34530
35 AmpsMAE-235-HB220V
230V
240V
9.0
9.3
9.8
0 to 257V
0 to 268V
0 to 280V
300 x 470 x 34532
40 AmpsMAE-240-HB220V
230V
240V
10.2
10.7
11.0
0 to 257V
0 to 268V
0 to 280V
370 x 450 x 42539
50 AmpsMAE-250-HB220V
230V
240V
12.8
13.4
14.0
0 to 257V
0 to 268V
0 to 280V
370 x 450 x 42547
60 AmpsMAE-2302-HB220V
230V
240V
15.4
16.0
16.8
0 to 257V
0 to 268V
0 to 280V
300 x 660 x 42054
80 AmpsMAE-2402-HB220V
230V
240V
20.5
21.4
22.4
0 to 257V
0 to 268V
0 to 280V
370 x 910 x 49072
100 AmpsMAE-2502-HB220V
230V
240V
25.7
26.8
28.0
0 to 257V
0 to 268V
0 to 280V
370 x 910 x 49080

Note: Other voltage configurations available on request/quotation.

Ratings: Currents stated are the maximums at any voltage within the stated output voltage range. Should it be required to run the variable transformer continuously at this current, then we would recommend you select a model with a 20% excess rating (eg for a 20 Amp continuous rating select the 25 Amp model).

AmpsAE ModelNominal
Volts AC
kVA @ max
Output Volts
Output
Volts
Dimensions
W x H x D mm
Weight
(Kgs)
3 AmpsMAE-103-LB110V
115V
120V
0.38
0.40
0.42
0 to 129V
0 to 134V
0 to 140V
164 x 390 x 2107
5 AmpsMAE-105-LB110V
115V
120V
0.64
0.67
0.70
0 to 129V
0 to 134V
0 to 140V
164 x 390 x 2108
10 AmpsMAE-110-LB110V
115V
120V
1.2
1.3
1.4
0 to 129V
0 to 134V
0 to 140V
164 x 390 x 21012
15 AmpsMAE-115-LB110V
115V
120V
1.9
2.0
2.1
0 to 129V
0 to 134V
0 to 140V
215 x 390 x 26013
20 AmpsMAE-120-LB110V
115V
120V
2.5
2.6
2.8
0 to 129V
0 to 134V
0 to 140V
215 x 390 x 26014
25 AmpsMAE-125-LB110V
115V
120V
3.2
3.3
3.5
0 to 129V
0 to 134V
0 to 140V
215 x 390 x 26016
30 AmpsMAE-130-LB110V
115V
120V
3.8
4.0
4.2
0 to 129V
0 to 134V
0 to 140V
300 x 470 x 34526
35 AmpsMAE-135-LB110V
115V
120V
4.5
4.6
4.9
0 to 129V
0 to 134V
0 to 140V
300 x 470 x 34530
40 AmpsMAE-140-LB110V
115V
120V
5.1
5.3
5.6
0 to 129V
0 to 134V
0 to 140V
300 x 470 x 34532
50 AmpsMAE-150-LB110V
115V
120V
6.4
6.7
7.0
0 to 129V
0 to 134V
0 to 140V
370 x 450 x 42537
60 AmpsMAE-1302-LB110V
115V
120V
7.7
8.0
8.4
0 to 129V
0 to 134V
0 to 140V
300 x 660 x 40044
80 AmpsMAE-1402-LB110V
115V
120V
10.3
10.7
11.2
0 to 129V
0 to 134V
0 to 140V
300 x 660 x 40054

Note: Other voltage configurations available on request/quotation.

Ratings: Currents stated are the maximums at any voltage within the stated output voltage range. Should it be required to run the variable transformer continuously at this current, then we would recommend you select a model with a 20% excess rating (eg for a 20 Amp continuous rating select the 25 Amp model).

.

Input Voltage:Nominal Voltage +6%
Output Voltage:Continuously variable from 0 to 117% of the input voltage
Frequency:47 to 65Hz
Power Factor:The Power Factor has no effect on performance providing the variable transformer is being used within its rated capacity
Efficiency:≥98%
Surge Rating:4 x max. current rating for 1 second
3 x max. current rating for 3 seconds
1.5 x max. current rating for 15 seconds
Environmental:Temperature range -15 to 45°C. Derate by 2% for each additional °C up to a max of 60°C
Suitable for indoor tropical use up to 95% RH (non-condensing)
Maximum altitude 1000m. Derate by 2.5% for each additional 500m
Standards Compliance:BS EN 61558-1:2005 + AI:2009 & BS EN 61558-2-13:2009
CE Conformity:CE Marked – compliant with European Union Directive 2006/95/EC (Low Voltage Directive)
RoHS Compliance:Fully RoHS Compliant – complaint with European Union Directive 2011/65/EC (RoHS Directive)
Standard Warranty:1 Year / 12 months from date of supply

Note:

Safety Caution: When using variable transformers, installation and connection must be carried out in accordance with relevant safety standards, and care must be taken to ensure local regulations are strictly adhered to. When utilized as components in other systems, the variable transformers must never be used without suitable safety protection being in place.

Sales & Support

Sales & Technical Data Sheet

– MAE-HO (220-240V) Models 

Sales & Technical Data Sheet

– MAE-LO (110-127V) Models 

Operator / User Manual

– MAE-HO (220-240V) & MAE-LO (110-127V) Models 

 
CE Certification 

MAE-HO & MAE-LO Series Single Phase Motorised Variable Transformers comply with the relevant European Union (EU) health, safety, and environmental protection directives and regulations and are duly CE marked.

Ashley-Edison (UK) Declaration

Low Voltage Directive – 2006/95/EC

Ashley-Edison (UK) Declaration

RoHS Directive – 2011/65/EC

Independent 3rd Party Verification Certificate

Low Voltage Directive 2006/95/EC

If you do not find the Motorised Variable Transformer that meets your application’s exact needs, please contact us with your specific detailed requirements.