This part of IEC 61892 specifies the characteristics for electrical installations in mobile units,
for use during transfer from one location to another and for use during the exploration and
exploitation of petroleum resources.
It applies to all installations, whether permanent, temporary, transportable or hand-held, to
a.c. installations up to and including 35 000 V and d.c. installations up to and including
1500 V.(a.c. and d.c. voltages are nominal values).