Huawei DBS3900 Installation Manual page 110

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1.1.3 Inflammable Environment
Operating the electrical device in an inflammable environment can be fatal.
Do not place the device in an environment that has inflammable and explosive air or gas. Do
not perform any operation in this environment.
1.1.4 Working at Heights
Avoid object falling when you work at heights.
When working at heights, fulfill the following requirements:
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Hoisting Heavy Objects
Do not walk below the cantilever or hoisted objects when heavy objects are being hoisted.
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Issue (02)
If the device is connected with the DC power supply, use 16 mm² minimum power supply
cord.
Use type H03VV-F or light PVC-sheathed flexible cord according to IEC 60227.
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Only trained personnel can work at heights.
Prevent the devices and tools that you carry from falling down.
Take safety and protection measures, for example, wear a helm and safety belt.
Wear warm clothes when working at heights in a cold region.
Before working at heights, check that all the lifting facilities are in good condition.
Only trained and qualified personnel can perform hoisting operations.
Before hoisting heavy objects, check that the hoisting tools are complete and in good
condition.
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