Lim. "Pass-Fail Test; Voltmeter; Memory (Hold); Filter - MEGABRAS MD-5060x Guia Del Usuario

When the selected mode is different from the Normal mode, the led A flashes
in order to warn the operation that the equipment is programmed for a special
test (SVT or with Timer).

LIM. "Pass-fail test"

Allows to program the lower insulation limit in 10 MΩ, 100 MΩ, 1 GΩ or 10 GΩ.
By using this key, the megohmmeter will indicate with a BEEP (intermittent
sound) and with an C led when the insulation resistance is lower than the pro-
grammed limit acting, in this case, as a "Pass-fail test" device. The C led will
remain flashing until the test is finished or until the measured resistance limit is
higher than the programmed limit.

Voltmeter

By pressing this key, the equipment will measure the tension effectively applied
to the element being tested.

Memory (HOLD)

It allows to hold the last performed reading on the display, at the moment this
key was pressed, without interrupting the test. When this key is released, the
megohmmeter updates the resistance and time values. The B led on and the
letter H on the display, indicate that the function was activated.

Filter

When isolation measures are carried out in transformers or in large dimension
machines, in presence of strong electromagnetic fields, it is possible that the
equipment reading is unstable, especially for resistance values higher than
300 MΩ.
In these cases it is convenient to press the FILTER ) key before starting the
measurement. This function allows to reach the insulation resistance value in
an upward curve without oscillations.
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