SECTION
HARMONIC MITIGATING TRANSFORMERS
ACME ELECTRIC
•
MILWAUKEE, WI
•
800.334.5214
•
acmetransformer.com
35
480 DELTA PRIMARY VOLTS — 208Y/120 SECONDARY VOLTS
SELECTION CHARTS
HARMONIC MITIGATING TRANSFORMERS
APPROX. DIMENSIONS
|
APPROX.
TYPE MTG.
WEATHER
Wiring Diagrams &
kVA
CATALOG NO.
Inches (Cm.)
SHIP WEIGHT
W – Wall
SHIELD
Design Figures
HEIGHT
WIDTH
DEPTH
Lbs. (Kg.)
F – Floor
P/N
Begin on Page 122
30.0
CMT533124S
29.90 (75.9)
28.15 (71.5)
22.37 (56.8)
535 (242.7)
F
{
WSA2
81-E
45.0
CMT533134S
29.90 (75.9)
28.15 (71.5)
22.37 (56.8)
600 (272.2)
F
{
WSA2
81-E
75.0
CMT533144S
35.90 (91.2)
31.90 (81.0)
26.88 (68.3)
760 (344.7)
F
{
WSA3
81-E
112.5
CMT533154S
41.52 (105.5)
32.90 (83.6)
29.88 (75.9)
1180 (535.2)
F
WSA4
81-E
150.0
CMT533164S
41.52 (105.5)
32.90 (83.6)
29.88 (75.9)
1340 (607.8)
F
WSA4
81-E
225.0
CMT533174S
41.52 (105.5)
32.90 (83.6)
29.88 (75.9)
1970 (893.6)
F
WSA4
81-E
MITIGATING TRANSFORMER WIRING DIAGRAM
PRIMARY: 480 Volts Delta
SECONDARY: 208Y/120 Volts
TAPS: 2, 2
1
/
2
% ANFC, 2, 2
1
/
2
% BNFC
12345
12345
12345
X3
X2
X1
H1
H2
H3
X0
81
Connect
Connect
Primary
Primary
Inter-
Secondary
Volts
Lines To
Connect
Lines To
504
H1, H2, H3
1
492
H1, H2, H3
2
480
H1, H2, H3
3
468
H1, H2, H3
4
456
H1, H2, H3
5
Secondary Volts
208
X1, X2, X3
120
X1 to X0
1 phase
X2 to X0
X3 to X0
Harmonic Mitigating Transformers–How do they work?
1.
Acme utilizes special winding techniques and “foil”
conductors in both its K-Factor and Harmonic Mitigating
transformers to minimize the heating effects of harmonic
currents.
2.
The use of foil conductor increases the dielectric strength
of the insulation because one layer is only one turn. Foil
also eliminates the effects of axial forces, which can result
in failure of wire wound transformers.
They consist of a Delta primary and a Zig-Zag secondary.
The Zig-Zag secondary causes a phase shift in the triplen
harmonics, which results in a canceling effect. This prevents
the triplen harmonic losses from being coupled back into
the primary and results in cooler operation and increased
energy efficiency.
The Acme Advantages
Diagram Showing Delta Primary &
Zig-Zag Secondary
(Zero degree angular displacement)
H2
X2
H1
H3 X1
X3
X0
