6Dihw\ ,Qirupdwlrq - ABB REF 54 Series Technical Reference Manual

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Technical Reference Manual, General

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Dangerous voltages can occur on the connectors, even though the
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auxiliary voltage is disconnected
National and local electrical safety regulations must always be
followed
The device contains components that are sensitive to electrostatic
discharge
The frame of the device has to be carefully earthed
Only a competent electrician is allowed to carry out the electrical
installation
Non-observance can result in death, personal injury or substantial
property damage
Breaking the sealing tape on the rear panel of the device will result in
loss of warranty, and a proper operation is no longer guaranteed
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