Tettex MIDAS 2881, Operating Instructions Manual

Page: 40 / 164

30 Operation Elements
When the MIDAS is permanently housed in a vehicle, the MIDAS ground should be bounded to the
vehicle chassis, which in turn is grounded.
Exposed terminals of equipment should not normally be allowed to 'float'. They should be grounded
directly or through the measuring leads of the MIDAS, unless otherwise specified.
6.7 Emergency Stop
Figure 16
Emergency
switch
When the Emergency Button is pressed the test is automatically terminated
(high voltage is switched off and it is not possible to switch the high voltage
on until the button is released)
Note: The emergency stop switch is directly integrated in the safety interlock
circuit (hardwired) without any interaction of the built-in PC or software.
Emergency Stop Button
6.8 Warning Lamp Bar
Figure 17
warining lamp
The red warning lamp bar located on the instrument side panel indicates the
actual high voltage state of the MIDAS.
No light
The system is in a safe state .
The emergency stop is pressed, the Safety Switch is released or HV-GND
lead is not connected.
Illuminated
Caution: High Voltage possible anytime! The system is ready to
switch high voltage on anytime. You have only to press the “High Voltage
ON” button to switch high voltage on.
The emergency stop is released, the Safety Switch is pressed and the HV-
GND lead is connected.
Blinking
Warning: High Voltage is live!
The High Voltage is switched ON and active.
Red warning lamp bar
Never attempt to disconnect the High Voltage Test Cable or the Low Voltage Lead(s) from
either the terminals of the test specimen to which they are connected at the outboard end, or
from the receptacles on the Instrument at the inboard end unless the MIDAS Voltage is set to
HV OFF (No warning lamp light), and the Safety Switch is released. Attempts to disconnect
leads while the MIDAS is energized may result in a serious and possibly lethal electrical shock.