Square D Digest 179

Power Factor Correction

Power Quality Improvement Solutions

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AccuSine Current Transformers Split-Core Design Construction

Directional silicon steel is used for the flexible core. Secondary windings are of copper. Unit is encapsulated in silicone rubber, which protects against moisture, dirt, oil, and corona. Table 4.42: Specifications Description Specification Insulation Level 0.72 kV BIL 10 kV Full Wave Frequency 50-400Hz Thermal Factor 1.25 at 30 °C; 1.0 at 55 °C Operating Temp Range -45 °C to +55 °C Altitude Up to 4000 Meters

200 through 300 400 through 500 600 through 800 1000 through 6000

4% 3% 2% 1%

Accuracy (Primary rating)

Secondary Leads

3.65 m with spade connectors Transformer (red) - Leads (yellow)

Color

Remains flexible from -45° to +200 °C

Twisting motion opens to CT diameter of round CT and smaller distance of rectangular CT. NOTE: Open split-core with a twisting motion only.

Table 4.43: Round Split-Core Design

Burden Capacity (Ω)

Reference Number by Secondary Current

Weight lb (kg)

Inside diameter (ID) in (mm) -A

Maximum load (A)

5A

1A

5A

1A 2.0

4 (101.6) 4 (101.6) 4 (101.6) 4 (101.6) 6 (152.4) 6 (152.4) 6 (152.4) 6 (152.4) 6 (152.4) 6 (152.4) 6 (152.4) 8 (203.2) 8 (203.2) 8 (203.2) 8 (203.2) 11 (279.4)

3.35 (1.6) 3.53 (1.6) 3.53 (1.6) 3.53 (1.6) 4.19 (1.9) 4.19 (1.9) 4.19 (1.9) 4.19 (1.9) 4.19 (1.9) 4.19 (1.9) 4.19 (1.9) 5.51 (2.5) 5.51 (2.5) 5.51 (2.5) 5.51 (2.5) 7.5 (3.4)

PCSPCTFCL50054 PCSPCTFCL100054 PCSPCTFCL150054 PCSPCTFCL160054 PCSPCTFCL50056 PCSPCTFCL120056 PCSPCTFCL150056 PCSPCTFCL200056 PCSPCTFCL250056 PCSPCTFCL300056 PCSPCTFCL250058 PCSPCTFCL400058 PCSPCTFCL500058 PCSPCTFCL2500511 — —

PCSPCTFCL50014 PCSPCTFCL100014

500

0.120 0.200 0.375 0.375 0.120 0.200 0.200 0.375 1.000 1.400 1.800 1.000 1.400 1.800 1.800 1.400

1000 1500 1600 1000 1200 1500 2000 2500 3000 2000 2500 4000 5000 2500 500

10.0 15.0 15.0 10.0 15.0 15.0 18.0 20.0 20.0 18.0 20.0 20.0 20.0 20.0 2.0

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CONTROL

PCSPCTFCL100016

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PCSPCTFCL150016 PCSPCTFCL200016

4 POWER MONITORING AND

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PCSPCTFCL200018

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4-39

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