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3.4.1.1 Power supply cable
Power supply cable has to be supplied by the Customer and installed by the maintenance staff. In
accordance to EN61010-1 power supply cable has to satisfy the following requirements:
• power supply cable must be certified (e.g. IMQ, UL, CSA...) or approved by an official national testing
bureau. Alternatively, the cable should fulfil IEC 227 and IEC 245 requirements
• three-cores cable, each core with section 1 mm
2
or 1.5 mm
2
• cable gland installed on AW400 is PG11, with flexible protection for cable. It has to be suitable for
cables with 6 to 10 mm diameter and to assure IP 68 sealing.
• the cable has to include ground wire and have to be properly grounded.
3.4.1.2 Installation of cables for power supply
3.4.1.2.1 Cable inlet
The three-core power supply cable, to be supplied by customer, has to be inserted complete with the external
sheath into the cable gland. The cable gland supplied with the instrument serves as a protection to the cable
at its inlet into the transmitter, so avoiding abrasions and too tight bends.
3.4.1.2.2 Cable anchorage (to be made by Customer)
Cable anchorage must be designed to avoid stresses, included torsion stresses to the conductors at the point
where they enter the transmitter. Cable anchorage must also prevent conductors abrasion. Cable anchorage
has to satisfy the following requirements:
• the bushing inside the cable gland is designed to suit cables with 6–10 mm diameter assuring an IP 68
seal. Tighten it correctly, making sure you prevent the cable to be pushed further inside the transmitter
causing damage to the hardware or danger to the operator.
• cable has not be fixed with a screw acting directly on the cable itself
• never make knots on the cable itself
• cable anchoring must be designed to make cable replacement easy and safe.
3.4.1.2.3 Plugs (to be supplied by Customer)
The plug for supply voltage must be certified (IMQ, UL, CSA...) and has to include ground conductor.
3.4.1.2.4 Supply voltage circuit-breaker (to be installed by the Customer)
The equipment has to be provided with a switch that allows the user to disconnect the instrument from the
power source. Isolating switch has to be easy to identify and reach.. Install the isolating switch near the
AW400. The distance from AW400 has to be shorter than 2 m. The isolating switch must have the following
characteristics:
• magneto-thermic circuit breaker
• the switch must be certified (IMQ, UL, CSA...)
• the switch must have I and O symbols to make clear if power supply is present or disconnected
• if the switch has to be installed outdoor, it must be suitable for such application (IP 65)
DANGER!
Electrical shock hazard. Power supply cables are connected to 115 or 230 V ac voltage.
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