VPN
98-121
ISSUE
3
PAGE
11
3.2.
I
MPORTANT
-
O
PERATOR
S
AFETY
It is the responsibility of the user's organization to ensure that the AT5600 and its associated
safety systems are installed, maintained, and operated in accordance with all safety guidance
and legislation that may be in force locally.
The BANNER EZ-Screen (light curtain) will provide only part of the complete safety function that
is required. The AT5600 and light curtain must be installed by a designated, qualified safety
person who will conduct an overall assessment of the risks involved and provide operator
training, safety notices, and further safety equipment as well as install the AT5600 and light
curtain in accordance with local regulations.
When conducting a risk assessment and providing operator training and notices, it should be
noted that the first safety feature of the AT5600 is the yellow indicating light on its front panel.
This light will be lit when the AT5600 is running a test and may be generating dangerous
voltages. (External indicating devices can also be used to show that the AT5600 is in a
hazardous condition. See the 'Remote Port' description in the AT5600 user manual.)
The operator should not attempt to touch the part under test or enter the safety enclosure when
the yellow light is illuminated.
The light curtain then provides supplementary safety protection against accidental entry into the
safety enclosure by the operator.
3.3.
I
MPORTANT
N
OTE
-
T
HE
S
AFETY
E
NCLOSURE
Clearly, any safety system should be thought of providing a total ‘safety enclosure’ which
prevents access from all sides to the dangerous voltages on the transformer under test.
It is also clear that the infrared safety system can only provide one side of this safety enclosure -
that which faces the operator.
If there is a danger that an operator or any other person could touch the transformer under test
from either the side or the rear of the tester, then you must also take steps to prevent this, either
by installing suitable physical barriers, or for example, by positioning the tester in the corner of
the room so that existing walls prevent access to the transformer from the side and rear.
The two vertical columns of the IR safety system would then normally be placed touching the
physical barriers, which form the side-walls of the safety enclosure.
Additionally, it should be noted that highest beam in the light curtain of the IR safety system is
approximately 550mm above the work surface.
If there is any danger that the operator could reach over this height, or could touch the
transformer under test from above, then further precautions should be taken to provide physical
barriers to guard against this.
