Electrical Installation; Installation In Hard-Wired Applications; Installation Using A Power Cord - Hach sc1000 User Manual
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Installation
3.4
Electrical Installation
3.4.1 Installation in Hard-wired Applications
3.4.2 Installation Using a Power Cord
Figure 7
Using the Optional Strain Relief and Conduit Plug
1
1.
Strain Relief, small
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14
DANGER
Only qualified personnel should conduct the installation tasks described in this
section of the manual.
DANGER
Always install a residual current circuit breaker (rccb) with a maximum trigger
current of 30 mA. If installed outside, provide overvoltage protection.
If installed outdoors, provide overvoltage protection between the power and the sc1000
controller system. Make sure the data and power cables do not cause tripping and do not
contain any sharp bends. Refer to
High-voltage wiring for the controller is conducted behind the high voltage barrier in the
controller enclosure. The barrier must remain in place unless a qualified installation
technician is installing wiring for power, alarms, or relays. See
information.
The instrument can be wired for line power by hard-wiring in conduit or by wiring to a
power cord if allowed by local electrical code. A local disconnect designed to meet local
electrical code is required and must be identified for all types of installation. See
and
Figure 11 on page 16
Do not connect the electrical power supply to the AC power until the sc1000 controller
system has been fully wired, fused, and the high voltage barrier and probe module cover
have been replaced.
In hard-wired electrical applications, the power and safety ground service drops for the
instrument must be 18 to 12 AWG. A sealing-type strain relief must be used to maintain
the IP65 environmental rating. See
opening sealing plug assembly. See
A sealing-type strain relief to maintain the IP65 environmental rating and a power cord
less than 3 meters (10 feet) in length with three 18-gauge conductors (including a safety
ground wire) can be used, see
Figure 7
for strain relief and conduit opening sealing plug assembly. See
page 16
for wiring information.
2
2.
Strain Relief, large
Figure 8
for housing breakout information.
and for suggested local disconnect configurations.
Figure 7 on page 14
Figure 10 on page 16
Replacement Parts and Accessories on page
3
3.
Conduit
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Figure 9
for barrier removal
Figure 10
for strain relief and conduit
for wiring information.
57. See
Figure 11 on
4.
Plug, sealing
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4
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