Specifications for Superconductor Current Fault Limiter, 480 Volt Class, Model LX-4
 
Operating Voltage...............................................................    480 V, 3-phase
Operating Frequency.......................................................    60 Hz
Continuous Current..................................................................    600 amps
Fault Short Circuit Power ..........................................................    4.2MVA
Fault Limit Current.................................................................    5,000 A rms sym

Inductance Range .......................................................    100mH to 6.0 mH
I2 T Rating .....................................................................    2,075,000 amp-2 sec.
Operating Time to Limit Peak .............................................    4.2 milliseconds
Enclosure ........................................................    Hermetically sealed, shielded
Insulation ................................................................    Class H, 50 kV BIL
Diameter Overall / Length ................................................    25 inch / 42 inch
Magnetics Weight .............................................................    205 lbs.

Wire Type .....................................    BSCCO-2223 Superconductor
Operating Temperature ....................................................    20oK
Internal Field .................................................................    1.5 Tesla
External Field at 1.0 m ........................................................    5 milli-Tesla
Total Reset Time ...............................................................    10 milliseconds

Compressor Supplier .........................................................    Cryomech Inc.
Refrigerator type ..................................    Two-stage, Gifford-McMahon refrig.
Weight ..........................................................................    370 lbs.
Capacity ........................................................................    15 watts at 20oK
Input Line Power .............................................................    5 kilowatts, 60 Hz
Total system weight incl. refrigeration ................................    575 lbs. (227 kg.)

 
Standard Ratings of Cryo-Pinch Limiters
Model
Voltage
Continuous Current (rms)
Short-Circuit Current (A Sym)
LX-4
480
600
5,000
LX-5
5 kV
600
12,000
LX-6
7.5 kV
600
12,000
LX-7
7.6 kV
1200
28,000
LX-8
15 kV
600
12,000
LX-9
15 kV
1200
28,000
LX-10
23 kV
400
32,000
LX-11
38 kV
200
42,000



Related product from PSA: 8 MVAR superconducting
synchronous condense for ultra-compact power factor compensation
5 kV, 925 amps.
 

POWER SUPERCONDUCTOR APPLICATIONS CORPORATION
930 Cass Street
New Castle, PA 16101
Laboratory Telephone: 724-652-8610
Office Telephone: 412-824-5062
E-Mail: psacorp@peoplepc.com