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Tesco 1047 Operation Manual
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Tesco 1047 Operation Manual

Tesco 1047 Operation Manual

Ct ratio/burden tester
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OPERATIONAL MANUAL
CAT. NO.
CT RATIO/BURDEN
TESTER
A lightweight, portable, and highly accurate
rate in-service test set to assist in finding lost
revenue by testing the accuracy of your
meter circuits.
FIELD TEST
EQUIPMENT
1047

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Summary of Contents for Tesco 1047

  • Page 1 OPERATIONAL MANUAL FIELD TEST EQUIPMENT 1047 CAT. NO. CT RATIO/BURDEN TESTER A lightweight, portable, and highly accurate rate in-service test set to assist in finding lost revenue by testing the accuracy of your meter circuits.
  • Page 2 FIELD TEST ABOUT THE COMPANY EQUIPMENT TESCO AROUND THE GLOBE The trusted source for meter testing " instruments and accessories since 1904. Tested. Trusted. TESCO. Our company is growing and working to serve YOU! Bristol+ Emeryville+ Lachine+ Cebu+ TESCO Main Office...
  • Page 3 The analog meter movement at the top of the Top connector is a 9-pin circular connector panel moves left to indicate % secondary current (compatible with Tesco CAT J-1044-50T duck bill change. For example, if secondary current does not cable) for CT secondary current input. The range for change during the burden test, the needle does not this input is 0.1 –...

  • Page 4: Product Description

    FIELD TEST PRODUCT DESCRIPTION EQUIPMENT CAT. NO. 1047: CT RATIO/BURDEN TESTER The CAT. 1047 is a hand-held CT tester instrument capable of testing % change of secondary current with applied burden. Available burdens are 0.1, 0.2, 0.5, 1.0, 2.0, 4.0, and 8.0 Ohms.

  • Page 5: Specifications

    Soft Case o Battery Charger o 3.5mm Jack-to-USB cable o TESCO USB thumb drive containing the PC App and Operating Instruction Manual • Optional current probes (sold separately) o Current Probe Extension Cable, Catalog No. C-1047-20 (20’) & C-1047-50 (50’) o Field Bag (Catalog No.

  • Page 6: Side Panel Connections

    The bottom most connector is a barrel connector for the 9.6V lithium battery pack charger supplied with the unit. Charging a fully depleted pack takes 4-5 hours. Use of any charger not specified or supplied from Tesco is prohibited, as other chargers may destroy the internal battery pack.

  • Page 7: Main Display Screen

    MAIN DISPLAY SCREEN CAT.1047 The display is a 4-line, 2-column LCD. Upon power up, the main display shows the HOME screen. Description of each number is shown below: Battery status icon: Empty to Full Shows the measured ratio of the CT under test. In...
  • Page 8 4. Take care not to have the CT secondary open-circuited at any time. DO NOT disconnect the CT secondary test cable from the 1047 while CT current flows in the cable – doing so will result in high voltage developing on the CT terminals and may result in arcing and destruction of the CT, or worse.

  • Page 9: Ratio Test

    RATIO TEST CAT.1047 HOW TO MEASURE CT RATIO 1. Perform steps 1-5 of “How to perform a burden test”. 2. Connect the primary current probe to the unit. Press SELECT button to toggle between the current probe scale factor and number of wraps parameter. The CLAMP button increments whichever parameter is highlighted by the asterisk.