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CT Burden Tester dots
RD-33



Features



The 585 CT Burden Tester design features a digital LED meter for displaying the current transformer (CT) secondary current. The burden is applied for a specific length of time controlled by circuitry inside the unit to help prevent the burnout of the burden elements.



Automatic System Continuity Check is a safety feature which allows the testing of the burden tester to assure that the CT secondary loop path inside the burden tester is continuous.  Each time burden is applied, the unit will self-check the system continuity.  The displays will annunciate a problem



Overview



The 585 Burden Tester is a hand held unit rated for use up to 20A. The design features a digital LED meter for displaying the current transformer (CT) secondary current.  The burden is applied for a specific length of time controlled by circuitry inside the unit to help prevent the burnout of the burden elements.



There are seven toggle switches, one for each of the standard A.N.S.I. burden values of 01, 0.2, 0.5, 1.0, 2.0, 4.0, 8.0 ohms.  To select a burden value, position the toggle switch handle to on.  In addition, up to 115 burden values other than the standard A.N.S.I. burdens may also be selected by using a combination of two or more of the switches available, providing a maximum burden of 15.8 ohms.



The selected burden is added by pushing the “Push To Add Burden” button.  The burden will be added for a controlled period of time, no matter how long the push button is held down.  This will reduce  the possibility of burnout of the internal burden elements.  In addition, the Model 585 is thermally protected to ensure the burden elements to not overheat.
The LED display has large numbers and displays the current in the CT secondary loop – before and after  burden applied and secondly when the “Push To Add Burden” button is depressed, the CT secondary loop current with the selected burden added to the loop.  The user will then make a determination if the two current values are acceptable; or if a unacceptable drop in output current of the CT has resulted from the added burden.



Automatic System Continuity Check is a safety feature which allows the testing of the burden tester to assure that the CT secondary loop path inside the burden tester is continuous.  Each time burden is applied, the unit will self-check the system continuity.  The displays will annunciate a problem



The unit is rated for 20 amperes and provides A.N.S.I. specified burdens of 0.1, 0.2, 0.5, 1.0, 2.0, 4.0 and 8.0.  In addition, non standard burdens such as 3.0, 6,0 and 7.0, 12.0 & 15.8 ohms may be selected.



Technical Data



Burdens

0.1 to 15.8 Ohms. Switches provided for ANSI values of  0.1, 0.2, 0.5, 1.0, 2.0, 4.0 & 8.0 Ohms are available.  Non-standard burden values can be derived from the different switches.



Current Rating

20 Amps Maximum



Voltage Class

480 Volts rms Maximum.



Input Power Requirements

6 AA Batteries - Provided



Dimension

7.5” H x 4.3” W x 3.9” D



Weight

Approximately 5 lbs.



Enclosure

Durable Polystyrol (PS) material



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