Hach LXV526.98.2112A Installation Seite 21

3.5.4 Power cord guidelines
Electrical shock and fire hazards. Make sure that the user-supplied power cord and non‐locking plug
meet the applicable country code requirements.
Electrocution hazard. Make sure that the protective earth conductor has a low impedance connection
of less than 0.1 ohm. The connected wire conductor must have the same current rating as the AC
mains line conductor.
The instrument is used for a single phase connection only.
Note: Do not use conduit to supply power.
The power cord is supplied by the user. Make sure that the power cord is:
• Less than 3 m (10 ft) in length.
• Rated sufficient for the supply voltage and current. Refer to
• Rated for at least 60 °C (140 °F) and applicable to the installation environment.
• Not less than 1.0 mm
• A power cord with a three-prong plug (with ground connection) that is applicable to the supply
connection.
• Connected through a cable gland (cable strain relief) that holds the power cable securely and
seals the enclosure when tightened.
• Does not have a locking type device on the plug.
3.5.5 Connect to the relays
Electrocution hazard. Do not mix high and low voltage. Make sure that the relay connections are all
high voltage AC or all low voltage DC.
Potential Electrocution Hazard. Power and relay terminals are designed for only single wire
termination. Do not use more than one wire in each terminal.
Potential fire hazard. Do not daisy-chain the common relay connections or jumper wire from the mains
power connection inside the instrument.
Fire hazard. Relay loads must be resistive. Always limit current to the relays with an external fuse or
breaker. Obey the relay ratings in the Specifications section.
Wire gauge less than 1.0 mm
The analyzer has six non-powered relays. The relays are rated at 5 A, 240 VAC maximum.
W A R N I N G
W A R N I N G
N O T I C E
2
(18 AWG) with applicable insulation colors for local code requirements.
D A N G E R
W A R N I N G
W A R N I N G
C A U T I O N
N O T I C E
2
(18 AWG) is not recommended.
Specifications on page 3.
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