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Elma DT5500A
side 26
d)Being free from the TEST button or pushing down the TESTbutton in the LOCK
status can exit from the LOCK status and shutoff the high-voltagesynchronously, the
resistance values is indicated in the primary display will be held, and the secondary display
still be in the status of monitoring the insulation voltage for the tested.
e)Subsequently, discharge the balance insulation voltage of the tested through the inner
switch of the meter. Turning the function switch can exit automatically from testing status
during the process
Low resistance (continuity) measurements
a). Set the range switch to 400Ω/BZ Position
b). Connect the red test lead to the V Ω terminal and black to the COM terminal.
c). Connect the tips of the test leads to both ends of the circuit under test. read resistance
in Ω on the LCD. The two ranges(40.00/400.0Ω) can be switched automatically; the
primary display of the resistance in Ω, flashes in synchronous with the analog bar.
d). When the impedance on circuit is below approximately 35Ω.It will indicate by a
continuous beeper.
e) The current is from 200 to 220mA while the tested resistance is 0Ω
f) The high voltage symbol “ “ flashes along with a primary display of “>30V” and the
buzzer warns frequently if the voltage (AC/DC) is more than 30V.
AC/DC Voltage measurements
a). Set the range switch to ACV or DCV position
b). Connect red test lead to “V Ω” terminal and black test lead to terminal “COM”.
c). Connect test prods of test leads IN PARALLEL to the circuit being measured.
d). Read the voltage value on LCD.
Power tools and small appliances
This test would also apply to other similar equipment that has a line cord. For double
insulated power tools, the megohmmeter lead shown connected to the housing would be
connected to some metal part lf the tool(e..g chuck,blade).
Note:The switch of the device must be in the “ON”position and the main power should be
disconnected.
Motors
AC-Disconnect the motor from the line by disconnecting the wires at the motor terminals
or by opening the main switch. If the main switch is used and the motor also has a starter
then the starter must be held, by some means, in the “ON” position. In the latter case, the
measured resistance will include the resistance of the motor, wire and all other
components between the motor and the main switch. If a weakness is in dicated, the motor
and other components should be checked individually. If the motor is disconnected at the
motor terminals, connect one megohmmeter lead to the grounded motor housing and the
26


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