An adequate number red signal lights, indicating the operational status, shall installed. the
residual current includes d.g. These shall contain the
information required for safe operation.6.ERECTION AND OPERATION ELECTRICAL TEST EQUIPMENT 97
- due frequently changing test duties
- case varying types test objects
- case serious difficulties performing the work
- when test duties occur only occasionally
The barriers may e.7.1 General
Test equipment may only operated under the control and supervision skilled person.
Emergency escape doors, gates, etc. shall able opened from the inside the test
area.
At least one emergency switching device shall installed outside the test areas.
When there are separate test areas within the test laboratory
- the operational status each the test areas shall indicated means signal lights
- red signal shall indicate danger“ for the entire test laboratory whenever the operational
status ready for operation operation exists least one the test areas.c. walls, grids, ropes, chains bars. Entrances shall provided
with warning sign „No unauthorized persons beyond this point“
A sufficient number red and green signal lights shall installed indicate the
operational status; green signal lights are not required case voltages 000 V.
.7.
11.
In test laboratories measures are required prevent unauthorized entry and shall not hinder
persons from leaving.
11. components, appropriate RCD shall used.
If the test circuits are electrically connected the general power supply system, additional
protection shall provided means RCD with rated difference current ≤30 mA. They shall designed that
visual contact with the operator can maintained from outside all times.
Test equipment shall provided with operating instructions. Test laboratories and experimental stations
The barriers shall solid walls grids least 800 high.
The working area test stations shall such that movement test personnel not
impeded.
The test equipment used shall inspected for externally visible damage defects before
use. Operation test equipment
11
