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A Guide for CVT Test Wiring Using the Instrument Module

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The instrument module is designed as a user interface. Its power rating is the same as the device

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but with a single calibration, you can perform all relevant routine tests in a much shorter time with a lower calibration error percentage

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First, install the Base module on the front panel of the device so that the male banana connectors of the Base module

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fit into the indicated part. Then, install three 18650 lithium batteries, 4.2 volts, 2000 mAh

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, in the indicated order from right to left. Install the relevant module, which in this test is the CVT or CT module

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on the Base module, then tighten the three screws of the transformer module

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and finally turn on the module. Here, you will see four boxes that indicate the battery charge percentage

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 each box indicating 25% of the battery charge

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Also, when you connect the battery charger to the module, the corresponding box will start
blinking depending on the battery charge percentage

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and when the battery is fully charged, all boxes will blink

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Warning: Do not use the module to perform tests while the batteries are charging

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The reason
for using batteries on the module is to isolate the module's power supply from the device's power supply and eliminate noise

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Important Notes:

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The Base module's optical sensor must be placed directly over the device's Error light

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The first time the batteries are installed on the module, even if they are fully charged

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due
to the defined protection, a charger must be connected to the module once for the module
to turn on

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Now, to perform calibration, enter the Setting window from the software's start page

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click on Apply Calibration Instrument in the Hardware tab, and after 5 seconds, the calibration will be complete

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Enter the CVT room, set the Type Device to 205AMT

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and in the Accessories section, set the Version Mode Easy to CT _205_ Ver01

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Note that calibrating the module is only necessary once and should only be done if the device or base module has been replaced

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To connect each end of the CVT (Voltage Transformer) to the module, we require two wires: a voltage wire and a current wire

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For instance, from the P1 end of the capacitive voltage transformer, two wires (one for voltage and one for current) are connected to the P1 outputs of the module

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The connections for 2P, 1S, and 2S are similar to the 1P connections

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Finally, the C1 and C0 terminals of the module are connected to one of the capacitors in the capacitor bank