Hach 9525sc Degas System Manual Del Usuario página 10

• Make sure that the power and safety ground service drops for the instrument are a minimum of
2
3.31 mm (12 AWG) (for 110 V) and a minimum of 2.08 mm
insulation is rated for 300 VAC or higher and 60 °C (140 °F) minimum.
• Connect equipment in accordance with local, state or national electrical codes.
• Connect the conduit through a conduit hub that holds the conduit securely and seals the enclosure
when tightened.
• If metal conduit is used, make sure that the conduit hub is tightened so that the conduit hub
connects the metal conduit to safety ground.
For installation with a power cable, make sure that the power cable is:
• Less than 3 m (10 ft) in length
• Rated sufficient for the supply voltage and current
• Rated for a minimum of 60 °C (140 °F) and applicable to the installation environment
• Not less than 3.31 mm
• A power cable with a three-prong plug (with ground connection) that is applicable to the supply
connection
• Connected through a PG11 or 3/4 inch cable gland (strain relief) that holds the power cable
securely and seals the enclosure when tightened
• Does not have a locking type device on the plug
• Near to the instrument with easy access by personnel
Terminal
L
N
G
Connect conduit or a power cord
Connect the controller to power with conduit or a power cord. Make connections at the same
terminals, regardless of the type of wire used. Refer to
Put each wire into the applicable terminal until the insulation is flush against the connector with no
bare wire seen. Pull lightly after insertion to make sure that there is a tight connection. Refer to
Figure 5.
1. Loosen the four captive screws.
2. Carefully open the electrical cover.
3. Use a knockout punch driver to punch a hole in the top of the NEMA electrical enclosure.
4. Attach a power cord strain relief connector to the hole.
5. Attach the power cord to the strain relief connector.
6. Connect the live (L), neutral (N), and ground (G) wires as shown in
7. Close the electrical cover.
8. Tighten the screws.
10 English
2
(12 AWG) with applicable insulation colors for local code requirements
Table 1 Wiring information—AC power
Description
Hot or phase (L)
Neutral (N)
Protective earth ground
(G)
2
(14 AWG) (for 220 V) and the wire
Color—North America
Black
White
Green
Table 1 to connect conduit or a power cord.
Color—EU
Brown
Blue
Yellow with green stripe
Figure 5.