METREL MI 3295, Instruction Manual

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MI 3295 Step Contact Voltage Measuring System Measurements
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Connections for Step voltage, Contact/Touch voltage and Potential measurement
For connections of the Station see Figure 7.2 , Figure 7.3 and Figure 7.6 .
Figure 7.10: Example of the display during generation of current
Note :

The output power is set automatically to its available maximum. In case of troubles
(generator switches off) refer to chapter
6.6.4 Output power range .

Incompletely unwound measuring cable can influence on size of generated test
current (coil impedance).

Usually the resistance of auxiliary probe limits the injected current. The injected
current can be increased by placing more probes in parallel.
7.2.2 Synchronization before the test (recommended)
Before starting with the Step voltage, Contact/Touch voltage or Potential measurements it
is recommended to synchronize the Meter and the Station. The synchronization sets the
same date and time in both units. Therefore the measured voltages can be correctly
scaled after the measurements. If the current is generated during the synchronization its
value of is also send to the Meter. For more information see chapter
5.4.5
Synchronization .

Connect Meter to the Station with the RS232 cable.

On Meter, select the BEFORE TESTS option in SYNC. MI3295S menu and
confirm.
Follow the information on the Meter’s LCD. If the synchronization succeeded a
confirmation beep will follow after short
connecting... and synchronizing...
messages.
Connections for synchronization
Figure 7.11: Connection of the instruments during synchronization
Note:

The measurements can be carried out without synchronization. In this case the
measuring current must be set / changed manually. If the injected current is