| Input Voltage |
208/240/480/600 delta connection (4 wire)
|
| Output Voltage |
208/120 wye (5 wire) |
| Frequency |
60 Hz. only |
| Continuous Capacity |
20 kVA |
| BTU/Hr. Output |
2048 |
| Efficiency |
> 97% (at full load, unity power factor) |
| Step Load Change |
+ 0.8% (at unity power factor) |
| Noise Rejection |
With unit under power and the isolation transformer configured for a transformation
ratio of 1:1 and with an ANSI/IEEE C62.41, Category A pulse applied either normal mode
or common mode at the input, the noise output voltage will be less than 10 volts normal
mode and less than .5 volts (½ of one volt) common mode in all four quadrants
(CM-NM, NM-NM, CM-CM, NM-CM). |
| Surge Voltage Withstand |
Tested under power to ANSI/IEEE C62.41, Category A & B (formerly IEEE587-1980).
Power conditioner tested to withstand up to 6000 volts @ 3000 amp ringwave and unipo
lar impulse. |
| Construction Materials |
Transformer wires are copper and insulated with Class H materials. Windings are insu
lated with Nomex paper insulation before vacuum varnishing. Internal wiring is a minimum of 200 degree C rated and sleeved with Class H materials. Grain oriented
silicon iron cores are constructed using 14 mil. laminations interleaved one to one. Eddy
currents are minimized and external magnetic fields are below 0.1 oersted (at 12 inches
distance in any direction). |
Physical Dimensions
H x W x D - inches (mm.) |
26 x 18 x 30 (660 x 457 x 762) |
| Weight in lbs. (kg.) |
585 (266) |
|
Input Connection Requirements*
Input Voltage |
Input Current (FLA) |
Supply Breaker Rating @ Switchgear |
AIC (Current Interrupt Capacity of Input Circuit Breaker) |
Minimum Input Conductor Size (includes ground) |
Input Lug Maximum Wire Size |
208 |
56 |
70 |
25 kAmps |
6 AWG |
2 AWG |
240 |
48 |
60 |
25 kAmps |
6 AWG |
2 AWG |
480 |
24 |
30 |
25 kAmps |
10 AWG |
2 AWG |
600 |
19 |
25 |
25 kAmps |
10 AWG |
2 AWG |
|
* Supply breaker ratings are determined by NEC guidelines limiting breaker loading to 80% of rated breaker capacity. Calculations for supply breaker recommended
ratings are based on input full load amps multiplied by 1.25 and then selecting the next larger standard size breaker. Wire sizes shown in the input and
output connection tables of this specification sheet are the minimum sizes allowed by electrical codes for each supply breaker rating and are taken from the 2002
National Electrical Code Article 310.16 table references for use in 90° C installations.
Output Connection Requirements
Output Voltage |
Output Current (FLA) |
Minimum Output Conductor Size (includes ground) |
Output Lug Maximum Wire Size |
208/120 |
56 |
6 AWG |
2/0 AWG |
|
Input Voltage Changes
This power conditioner is equipped with a fixed input circuit breaker. If changes are required to the input voltage setting of the
power conditioner, it will be necessary to replace the fixed breaker and set input voltage taps appropriately per the following
diagram. Please contact POWERVAR Technical Support to order a replacement breaker and for assistance in making any
required changes.
VAC |
Connect each phase |
| 208 |
H1 to H3-4, H2 to H1-4 and H3 to H2-4 |
| 240 |
H1 to H3-3, H2 to H1-3 and H3 to H2-3 |
| 480 |
H1 to H3-2, H2 to H1-2 and H3 to H2-2 |
| 600 |
H1 to H3-1, H2 to H1-1 and H3 to H2-1 |
|
H1, H2, H3 to the Main Input Circuit Breaker |
|
|
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