SECTION
AIR CONDITIONING, REFRIGERATION & APPLIANCE TRANSFORMERS
ACME ELECTRIC
•
MILWAUKEE, WI
•
800.334.5214
•
acmetransformer.com
110
The transformers in this section are autotransformers
designed to change a wide range of voltages to the standard
motor voltages for domestic appliances, air conditioners,
and related equipment.
Correcting high or low supply voltage conditions to match
the voltage requirements of appliances and equipment aids
in safe, efficient operation.
These Acme autotransformers change or correct off-
standard voltage that may be the result of:
1.
Line supply voltage not matching the appliance motor
nameplate voltage, (e.g., supply voltage is 380Y/220V,
three phase, four wire. Appliance motor operates on 110 V,
single phase. See schematic).
2.
Low voltage due to inadequate wiring capacity in the
electrical distribution system.
3.
Low voltage caused by distribution of power over a
long distance.
4.
High or low voltages supplied by the utility company.
Standard voltages and frequencies (Hz) vary throughout
many countries of the world. Since these autotransformers
are suitable for 50/60 Hz (cycle) service, they are
applicable in export trade where it is necessary to change
to a standard voltage for appliance operation.
These transformers are capable of adjusting voltage
only; they can’t change the frequency of a supply circuit.
However, in most instances, 60 Hz (cycle) equipment
can be operated from a 50 Hz supply if the voltage is
reduced approximately 8 -10%. For example, 115 V, 60 Hz
equipment can usually be operated on 50 Hz at 105 V.
Some common uses for Acme Air Conditioning, Refrigeration
and Appliance transformers include adjustment of off-
standard voltage to the nominal voltages required to
operate:
a)
Air conditioners, television receivers, all home
appliances.
b)
Hermetically sealed refrigeration motors.
c)
Individual machine lighting, tool post grinders, fans,
convenience outlets for portable lights, power tools.
d)
Magnetic contactors, relays, AC motors and similar
devices requiring large starting (inrush) currents.
Acme appliance transformers are autotransformers. The input
(primary) winding is in electrical series connection with the
output (secondary) winding; the input and output are not
electrically isolated.
The autotransformer principle is the most economical for
appliance applications, since only the difference between
input voltage and output voltage is transformed. This results
in smaller size, reduced weight and lower cost.
All units are constructed of core lamination processed
from annealed electrical grade silicon steel. This improves
transformer efficiency by keeping heat losses at a
minimum.
Coils are precision machine wound and hand finished.
The core and coil combination is impregnated with electrical
grade varnish, then heat cured. This provides cool
operation and protects the transformer from moisture and
contamination. The result is long transformer life.
Air Conditioning, Refrigeration & Appliance Transformers
380V
N
A
380Y/220V, 3Ø
4 WIRE SUPPLY
220V
110V
ACME
APPLIANCE
TRANSFORMER
LOAD
(MOTOR, APPLIANCE, ETC.)
Construction Features
