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Chapter 2 Installation 13
ACTURA Flex 48330 Power System User Manual
voltage AC power supply system should adopt three-phase five-line or single-phase
three-line modes.
The AC power cable should adopt copper core cable, and the cable section should
suit the load. It is recommended that the power cable outside the power room be
buried directly under the ground or by means of cable pipe. Power cable should be
wired separately from signal line.
The AC mains voltage shall be within the range of the voltage input range of
rectifiers.
The DC power system has a circuit breaker that can cut the AC mains power to it.
2.1.3 Site Survey
The power room must be surveyed prior to installation, which should be focused
on:
1. Checking the wiring device, including cable chute, wiring rack, floor, wiring holes.
2. Checking the environmental conditions, including temperature, humidity, dust.
3. Checking the conditions for implementing the installation, including power supply
and lighting.
2.1.4 Tools & Material
1. Tools required for power equipment installation include electric drill, wire cutter,
wire presser, various wrenches, screwdriver, electrician knife, and steel saw. The
tools must be insulated and antistatic handled before they are used.
2. Power cables for electrical connection include AC cables, DC load cables,
battery cables, earth cables, earth bar and lighting connection cables. Their design
specifications should be in accordance with relevant specifications in the electrical
industry and the materials should be purchased according to the design material
list.
AC cables: this system uses 3-phase or single-phase AC power. Copper-core
flame-retardant PVC insulated cable and PVC sleeve soft cable, such as NH-BVR,
are recommended for the AC cables, whose sectional area should suit the load.
When the wiring distance is less than 30 meters, take 2.5A/mm
2
of economical
current density to calculate the sectional area of the AC cables.
The sectional area of the DC load cables and battery cables should be calculated
using the following formula:
A=ΣI×L/K△U