Siemens ULTRAMAT 23 Series Equipment Manual page 74

Connecting
5.3 Electrical connection
19" rack unit
A flexible cable suitable for power supply cords must be connected to the appliance plug. The
cross-section of each conductor must be at least 1 mm
must not be smaller than that of the L and N conductors. The cable must be suitable for a
temperature of at least 70 °C (158 °F) and must be approved for the country of use or the
location.
A readily accessible facility for mains disconnection must be provided in the immediate vicinity
of the analyzer.
Bench-top unit
A power supply cable must be used which is approved for the country of use or the location. The
minimum cross-section of each conductor must be at least 0.75 mm
length of the cable does not exceed 2 m (6 1/2 ft). Longer cables require larger conductor cross-
sections than 0.75 mm
When positioning the analyzer, make sure that the power connector at the rear is accessible at
all times.
Note
Disconnecting means
The power supply cable also serves as the disconnecting means.
Make sure that the cable is
• clearly recognizable
• easy to reach.
The cable length must not exceed 3 m.
Electrical circuit breaker in accordance with IEC 60947-1 and IEC 60947-3
In accordance with IEC 60947-1 "Standard for low-voltage switchgear and controlgear" and IEC
60947-3 "Switches, disconnectors, fuses" you require an electrical circuit breaker for the device.
We recommend commercially available automatic circuit breakers.
74
. The cable must at least be suitable for a temperature of 70 °C (158 °F).
2
2 . The cross-section of the PE conductor
2 as long as the maximum
Equipment Manual, 04/2022, A5E37100388-012
ULTRAMAT 23