KVAR Enclosure Design
Steelman KVAR Power Factor Correction Capacitors are supplied in a NEMA Type 3R Dustproof & Rainproof enclosure, and are suitable for wall, rack, pole or base mounting either directly at the motor or at the service entrance distribution panel. For special enclosure requirements, such as NEMA 4X, please consult factory.
KVAR ENCLOSURE SIZES
The KVAR enclosure size number for each KVAR Unit are listed in Table 4. Enclosure dimensions are shown below. Custom enclosure sizes are available, consult factory for more information.
KVAR WIRE, FUSE & SWITCH SIZES
Recommended wire sizes, fuse and switch ratings are shown in Table 4. Never undersize wire or fuses to KVAR units.
KVAR FUSE RATING
Steelman KVAR Units are supplied with fuses having a 100,000 amperage interrupting capacity. Do not replace with fuses of a lower rating.
CHECK LINE VOLTAGE
Prior to installation check the capacitor nameplate to make certain that the capacitor voltage rating is suitable for operation at the supply (line) voltage. Steelman capacitors are capable of operation at a maximum of 110% of nameplate rated voltage.
OPERATING TEMPERATURE
Steelman KVAR Power Factor Correction Capacitors are designed fora maximum operating temperature of 70OC (150OF). If the operating temperature rises above this value, forced cooling is recommended. Good installation practice dictates locating the capacitors away from combustible materials and sources of excess heat.
KVAR Enclosure Dimensions
Standard Units
All standard KVAR units that weigh under 150 lbs are built in NEMA 3R, rainproof and dustproof enclosures, and are equipped with wall, pole, and floor mounting brackets.
| Enclosure Size | W | H | D | F |
|---|---|---|---|---|
| 00 | 8.75 | 9.5 | 4.5 | 3.5 |
| 0 | 8.75 | 9.5 | 7.5 | 6.5 |
| 1 | 8.75 | 17.5 | 7.5 | 6.5 |
| 2 | 14 | 19.5 | 9.5 | 8.5 |
| 3 | 18.5 | 27.5 | 12.5 | 11.5 |
| 4 | 17.55 | 34.5 | 12.5 | 11.5 |
| 4A | 21 | 30 | 16.5 | 15 |
Pad Mount Units
The Steelman Pad Mount units are designed to be mounted on the floor. The standard unit is constructed in a NEMA 1 Indoor welded construction. NEMA 3R Outdoor enclosures are also available. All Pad Mount units are built with lifting eye bolts.
| Enclosure Size | W | H | D | F |
|---|---|---|---|---|
| 5 | 20 | 41.5 | 21.5 | 19.5 |
| 6 | 30 | 40.5 | 21 | 21 |
Econovar Units
The Steelman Econovar units are non-fused capacitors that are designed to be placed on the load side of single speed motors. Each unit is prewired in a weatherproof enclosure and supplied with a 4 foot, 4 conductor electrical cord, ready for connection
480 Volt
| KVAR RANGE | W | H | D |
|---|---|---|---|
| 0-13 | 7.5 | 11 | 4.5 |
| 14-25 | 9.5 | 11 | 6.5 |
240 Volt
| KVAR RANGE | W | H | D |
|---|---|---|---|
| 0-6 | 7.5 | 11 | 4.5 |
| 7-12 | 9.5 | 11 | 6.5 |
