Three Phase Heaters 208 thru 600 Volts AC
Three phase heaters are available in voltages from 208 to 600 Volts AC, for insertion into duct sizes ranging from 6” x 8” to 120” x 144”.
The following stages are available:
| THREE PHASE | THREE PHASE | ||||
|
KW@208V |
Elements @ 208V |
KW@240V |
Elements @ 240V |
KW@240V |
Elements @ 240V |
|
2.1-9.0 |
3 Star |
2.1-9.8 |
3 Star |
41-54 |
9 Delta |
|
9.8-17.25 |
3 Delta |
11-17.25 |
3 Delta |
55-59.7 |
18 Star |
|
18-34.5 |
6 Delta |
18-19.6 |
6 Star |
52 - 72 |
12 Delta |
|
35-51.75 |
9 Delta |
20-36 |
6 Delta |
61 - 79.8 |
24 Star |
|
52-69 |
12 Delta |
37-39.6 |
9 Delta |
Contact Factory |
|
NOTE: KW's listed above are nominal for ease in determining the number of elements.
| Regular No. of Elements | 2 Staging Increments | 3 Staging Increments | 4 Staging Increments |
|
3 Star |
1/2,1/2 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
|
3 Delta |
1/3,2/3 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
|
6 Star |
1/2,1/2 |
1/2,1/4,1/4 |
1/4,1/4,1/4,1/4 |
|
6 Delta |
1/2,1/2 |
1/3,1/3,1/3 |
1/3,1/3,1/6,1/6 |
|
9 Delta |
1/3,2/3 |
1/3,1/3,1/3 |
1/3,2/9,2/9,2/9 |
|
12 Star |
1/2,1/2 |
1/2,1/4,1/4, |
1/4,1/4,1/4,1/4 |
|
12 Delta |
1/2,1/2 |
1/2,1/4,1/4 |
1/4,1/4,1/4,1/4 |
|
18 Star |
1/2,1/2 |
1/3,1/3,1/3 |
1/3,1/3,1/6,1/6 |
|
24 Star |
1/2,1/2 |
1/2,1/4,1/4 |
1/4,1/4,1/4,1/4 |
| THREE PHASE | ||
|
KW@480-600V |
Elements @ 480-600V |
|
|
5 - 19.8 |
3 Star |
|
|
21 - 36 |
3 Delta |
|
|
37 - 39.6 |
6 Delta |
|
|
41 - 72 |
6 Delta |
|
|
73 - 79.8 |
12 Star |
|
|
81 - 100 |
9 Delta |
|
STAGING OF CONTACTOR CONTROLLED HEATERS
| Regular No. of Elements | 2 Staging Increments | 3 Staging Increments | 4 Staging Increments |
|
3 Star |
1/2,1/2 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
|
3 Delta |
1/3,2/3 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
|
6 Star |
1/2,1/2 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
|
6 Delta |
1/2,1/2 |
1/3,1/3,1/3 |
1/3,1/3,1/6,1/6 |
|
9 Delta |
1/3,2/3 |
1/3,1/3,1/3 |
1/3,2/9,2/9,2/9 |
|
12 Star |
1/2,1/2 |
1/3,1/3,1/3 |
1/4,1/4,1/4,1/4 |
”The following guidelines are commonly used, but do not necessarily apply to all applications”.
Center – “Staging of contactor controlled heaters”