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117
Current Transformers
F
3500 Scarlet Oak Blvd. St. Louis MO USA 63122 V: 636-343-8518 F: 636-343-5119
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The Professional
Energy Monitoring
Company
ISO 9001:2008QualityManagementSystem
M N TI
Medium Voltage Current Transformer
CTW5-L-110 & CTWH5-L-110
Applications
Metering and relaying.
Frequency
50 - 400 Hz.
Maximum System Voltage
15.5kV, BIL 110kV full wave.
Continuous Thermal Current Rating
Factor
1.00 at 30° C amb., 0.85 at 55° C amb.
Primary Terminals
1/2-13 bolts with one Belleville washer.
Secondary Terminals
Brass screws No. 10-32 with one flatwasher & lockwasher.
Vacuum cast in polyurethane resin.
Other ratios, secondary currents and dual ratios are avail-
able. Refer to factory.
The transformers are tested for partial discharge to Canadian
Standards CAN3-C13-M83. This test can also be carried out to
IEC requirements if requested.
Approximate weight
34 lbs.
Regulatory Agencies
Part Number*
Current
Ratio
Relay
Class B0.1 B0.2 B0.5 B0.9 B1.8
ANSI Metering Class at 60 Hz Thermal Current Rating
1 second RMS Amps
CTW5-L-110-T20-050 5:5 T20 0.3 0.3 0.6 1.2 2.4 375
CTW5-L-110-T20-100 10:5 T20 0.3 0.3 0.6 1.2 2.4 590
CTW5-L-110-T20-150 15:5 T20 0.3 0.3 0.6 1.2 2.4 1200
CTW5-L-110-T20-250 25:5 T20 0.3 0.3 0.6 1.2 2.4 1700
CTW5-L-110-T20-300 30:5 T20 0.3 0.3 0.6 1.2 2.4 1700
CTW5-L-110-T20-400 40:5 T20 0.3 0.3 0.6 1.2 2.4 2400
CTW5-L-110-T20-500 50:5 T20 0.3 0.3 0.6 1.2 2.4 4715
CTW5-L-110-T25-750 75:5 T25 0.3 0.3 0.6 1.2 2.4 4715
CTW5-L-110-T25-101 100:5 T25 0.3 0.3 0.6 1.2 2.4 8625
CTW5-L-110-T25-151 150:5 T25 0.3 0.3 0.6 1.2 2.4 11500
CTW5-L-110-T30-201 200:5 T30 0.3 0.3 0.6 1.2 2.4 11500
CTW5-L-110-T20-251 250:5 T20 0.3 0.3 0.6 1.2 2.4 21700
CTW5-L-110-T25-301 300:5 T25 0.3 0.3 0.6 1.2 2.4 21700
CTW5-L-110-T30-401 400:5 T30 0.3 0.3 0.6 1.2 2.4 44700
CTW5-L-110-T35-501 500:5 T35 0.3 0.3 0.3 0.6 1.2 44700
CTW5-L-110-T40-601 600:5 T40 0.3 0.3 0.3 0.6 1.2 44700
CAUTION: Use only the Belleville washers supplied. Tighten to between 25 and 30 foot-pounds. Do not overtighten.
* For ordering with primary bars, change model number to CTWH5-L. A test card is provided with each unit.
BAR SIZES
PRIMARY CURRENT
DIMENSIONS
A B
5 TO 250A 0.25 1.50
300 TO 1200A 0.38 2.00