<p> TYPE KCTS-8000 CURRENT TRANSFORMER TEST SYSTEM</p><p>Functional Description and Specifications</p><p>1. General</p><p> a. The test system shall be able to check the accuracy of instrument transformers having primary ranges from 5 to 8,000 amperes.</p><p> b. The test system shall include a built-in, microprocessor-controlled, automatic, auto-ranging comparator.</p><p> c. The test system shall utilize a motor-driven variac to reduce test time.</p><p> d. The test system shall incorporate protective circuitry to ensure the safety of the operator, the test system, and the transformer-under-test.</p><p> e. The accuracy or calibration of the precision transformer must be traceable to the National Institute of Standards and Technology.</p><p> f. The test system shall be suitable for 60 Hz. operation.</p><p>2. Test Ranges</p><p> a. The following primary ranges shall be provided:</p><p>5, 10, 15, 20, 25, 30, 40, 50, 60, 75, 80, 100, 120, 125, 150, 160, 200, 250, 300, 400, 500, 600, 750, 800, 1000, 1200, 1500, 1800, 2000, 2500, 3000, 4000, 5000, 6000, 7500, and 8000 amperes.</p><p> b. 400% tests shall be able to be performed on all ranges up to, and including, 2000 amperes.</p><p> c. 200% tests shall be able to be performed on all ranges up to, and including, 4000 amperes.</p><p> d. The secondary current shall be 5 amperes.</p><p>3. Test Burdens</p><p> a. The following ANSI burdens shall be included and shall be switch selectable:</p><p>B–0.1, B–0.2, B–0.5, B–0.9, B–1, B–1.8, B–2, B–4, and B–8.</p><p>KCTS-8000 Specification Page 1 of 3 04-2002 b. These burdens shall be very stable and highly accurate (the resistive and inductive component values shall be accurate to within ±1%).</p><p> c. Burdens up to, and including, B–1.8 shall be rated for 400% testing, while the remaining burdens (B–2, B–4, and B–8) are rated for 200% testing.</p><p> d. Provisions shall be made for connection of an external burden.</p><p>4. Comparator</p><p> a. The comparator shall be dedicated to the test system. It shall only be capable of testing current transformers.</p><p> b. The comparator shall be automatic and autoranging to provide minimum measurement time. Measurements shall be completed within 5 seconds of adjusting the test current.</p><p> c. The comparator shall digitally display test current and test results. Test results shall consist of ratio error (in % or RCF) and phase error (in minutes or milliradians).</p><p> d. The comparator shall calculate and digitally display the best accuracy class for which the transformer-under-test qualifies.</p><p> e. The comparator shall include protective circuitry which senses error conditions such as wrong ratio or wrong polarity and then automatically removes power from the test system loading circuitry.</p><p> f. The comparator shall offer RS-232 test result output options.</p><p>5. System Accuracy</p><p> a. The combined error of the precision current transformer and the transformer comparator shall be no greater than ±0.025% on ratio and ±2 minutes on phase angle at 100% full load current.</p><p>6. Self Check</p><p> a. The calibration of the precision transformer shall be able to be periodically checked by the One-to-One method, whereby the ratio and phase angle performance can be quickly and accurately checked without the use of an external reference standard.</p><p>KCTS-8000 Specification Page 2 of 3 04-2002 7. Input Power Requirements</p><p> a. The test system shall operate from a 240VAC or 208VAC (to be specified at time of order), single-phase service at a nominal 200 amperes.</p><p> b. A separate 120 VAC, single phase source at 5 amperes is required.</p><p>8. Weight and Dimensions</p><p> a. The approximate weight of the test system shall be 1500 lbs. (680 kg.).</p><p> b. The test system shall measure approximately 39 in. (99 cm.) high, 55.5 in. (141 cm.) wide, and 35 in. (89 cm.) deep.</p><p>9. Instruction Manual</p><p> a. An instruction manual shall be furnished with the test system.</p><p>10. Options</p><p> a. A cable and hardware kit for connecting the transformer-under-test to the test system shall be able to be purchased separately.</p><p> b. A demagnetizing feature shall be an available option.</p><p> c. 50/60 Hz. operation shall be able to be specified as an option.</p><p>KCTS-8000 Specification Page 3 of 3 04-2002</p>