DER EE DE-5003, Руководство пользователя

Страница: 6 / 32

- 4 -
Overvoltage Installation Category
：
Maximum input voltage of the meter is according to overvoltage
installation category of safety standard. Do not apply more
than the rating voltage.
Measuring
Category
Description Example
CAT. II
Measurements in electrical circuits
which are directly connected to the
low-voltage mains via plug
in household, office and
laboratory applications
CAT. III
Measurements in building installations
stationary consumers,
distributor terminals, devices
connected permanently to the
distributor
CAT. IV
Measurements at power sources for
low-voltage installations
Meters, mains terminals,
primary over current protection
device
•
Warning
Radiation immunity affects the accuracy of meter under the conditions
specified in IEC61326-1 Also may result the meter malfunctions
where has equipments emitted strong electromagnetic interference.
Entrance cable
In-house mains power
power
distributor
Equipment
wall
socket
stationary
equipments
…etc