SECTION
DRY-TYPE DISTRIBUTION TRANSFORMERS
ACME ELECTRIC
•
MILWAUKEE, WI
•
800.334.5214
•
acmetransformer.com
30
600 PRIMARY VOLTS — 480 SECONDARY (open delta) VOLTS — 3Ø, 60 Hz
480 PRIMARY VOLTS — 380 SECONDARY (open delta) VOLTS — 3Ø, 50/60 Hz
①
kVA capacity of three phase autotransformer bank, using two single phase, 60 Hz transformers
connected open delta.
②
Catalog No. is for 1 transformer, 2 units are required.
③
Can be reverse connected with no change in kVA.
④
For transformer dimensions, refer to appropriate table in section 1, page 17.
⑤
For proper overcurrent protection, refer to Article 450-4 of N.E.C.
A
B
C
600
OR
480
VOLTS
480
OR
380
VOLTS
DIAGRAM SHOWS NO TAP UNITS ONLY
X
X
X
X
H
H
H
H
TRANS. #1
OPEN DELTA-
AUTO
X
X
X
X
H
H
H
H
TRANS. #2
A
B
C
THREE PHASE
480 PRIMARY (open delta) VOLTS ––
240 SECONDARY (open delta) VOLTS –– 3Ø, 60 Hz
⑤
O
= Fuse Location NEC 450-4, 1990.
The diagrams above are for illustration purposes only. Please contact the factory for construction details.
Each Acme transformer is shipped with detailed wiring diagrams. Refer to nameplate located inside the front
cover for specific voltage tap combinations.
⑤
O
= Fuse Location NEC 450-4, 1990.
Economical Auto Arrangements
Using two single phase transformers
Pri. 600V Pri.
Sec.
Pri. 480V
Pri.
Sec.
Catalog
③
Max. Size
Sec. 480V Amps
Amps Sec. 380V Amps
Amps Qty
②
No.
④
Fuse or
kVA
①
kVA
①
Breaker
8.0 7.70
9.60 6.5 7.80 9.60
2 T253010S
15
12.0 11.55
14.40 9.5 11.55 14.40
2 T253011S
15
17.0 16.33 20.41 13.5 16.33 20.41
2 T253012S
25
25.0 24.06 30.01 20.0 24.06 30.01
2 T2530134S
30
43.0 41.38 51.70 34.0 41.38 51.70
2 T2530144S
60
64.0 61.59 77.00 51.0 61.59 77.00
2 T2535153S
80
86.0 82.76 103.44 68.0 82.76 103.44
2 T2535163S
110
129.0 124.13 155.20 103.0 124.13 155.20
2 T2535173S
175
216.0 207.85 259.80 172.0 207.85 259.80
2 T2535183S
300
324.0 311.78 389.70 259.0 311.78 389.70
2 TP530193S
400
433.0 416.67 520.83 346.0 416.67 520.83
2 TP530203S
600
650.0 625.00 781.00 519.0 625.00 781.00
2 TP530213S
800
865.0 833.00 1040.00 692.0 833.00 1051.00
2 TP530223S
1200
1445.0 1391.00 1738.00 1156.0 1391.00 1756.00
2 TP530233S
2000
2164.0 2083.00 2602.00 1731.0 2083.00 2629.00
2 TP530243S
3000
Primary
Secondary
Max. Size
kVA
①
Qty.
②
Catalog No.
③
Full Load
Full Load
Fuse or
Amps
Amps
Breaker
3.0
2
T253010S
3.60
7.20
10
5.0
2
T253011S
6.00
12.00
10
6.0
2
T253012S
7.20
14.40
15
10.0
2
T2530134S
12.00
24.00
15
17.0
2
T2530144S
20.50
40.80
30
26.0
2
T2535153S
31.50
63.00
40
34.0
2
T2535163S
41.00
81.60
60
52.0
2
T2535173S
63.00
125.00
80
86.0
2
T2535183S
104.00
206.30
150
130.5
2
TP530193S
157.00
314.00
200
173.0
2
TP530203S
209.00
418.00
300
259.0
2
TP530213S
312.00
623.00
400
346.0
2
TP530223S
417.00
834.00
600
578.0
2
TP530233S
696.00
1392.00
1000
865.0
2
TP530243S
1041.00
2082.00
1600
