Electrical Connection; Recommendations For The Electrical Wiring (All Versions) - bürkert 8035 Bedienungsanleitung

Installation and electrical wiring
Fig. 12 : Installation of a wall-mounted version of the 8025
4.2.

Electrical connection

4.2.1. Recommendations for the electrical wiring (all
versions)
• Do not open nor wire while the device is powered.
• The electrical installation of the building where the device is installed must be
secured by a switch or a circuit breaker. Install it near the device and identify it as
the switchgear of the device.
• Do not apply in the same cable both a dangerous voltage and a safety extra low
voltage to the relays.
• Use safety devices for both:
- The power supply: a time-delay fuse (300 mA) and an interrupter
- Relays: a max. 3-A-fuse and a circuit breaker (depending on the application).
• Use cables with an operating limit temperature of at least 80 °C.
• Earth the device locally by using a wire with a cross section of at least 0,75 mm
• Under normal operating conditions the measuring signal can be transmitted by a shielded
cable with 0,75 mm
• The line must not be installed in combination with carrying lines with a higher voltage
or frequency; If a combined installation cannot be avoided, a minimum space of 30 cm
Fuse
2
cross-section.
E-18-
Flow transmitter 8025/8035
115/230 VAC voltage supply
selector
2 .