Protecting Your Relay Against Test-Related Accidents - SMC Networks PTE-100-C PRO User Manual

Current and voltage relay testing unit to 250 a with integrated independent variable voltage channel

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User manual (21 pages)

Table Of Contents

Table of Contents

To read the voltage applied to the load while you are injecting current, do

the following:

1) Toggle to Func. mode using the

as necessary to navigate to

2) Connect the load to an appropriate current tap and flag this tap

using the

in its minimum ("0") position now.

3) Press the

gently clockwise to regulate the current injection to the desired val-

ue on the Display #2. The applied voltage will be shown at Display

#1 simultaneously.

To measure the impedance of the connected load, follow the same steps as

above but use the

will be shown in Display #1. For greater accuracy, this measurement can

be done following the 4-wire method using the secondary mode of the

tap

function:

1) Connect both sides of the connected load in parallel to the

BLACK/RED monitor inputs.

2) While you are placed at the

key and hold it down until a beep is heard and the function's LED

starts blinking. You are now using the secondary measurement

mode. In this mode, the measurement is performed using the value

of the injected current and the voltage drop measured at the con-

nected load.

Impedance measurement requires a minimum amount of current (at least 10

per cent of the selected tap's range) to be injected to the load. Non-linear

loads, i.e. those that exhibit impedance changes with time because of large

reactive components, cannot be accurately measured with this function.