Midea MGA-D30W/SN1 - 2. Specification of Control Wiring; 3. Diameter Selection of Grounding Wiring; 4. Power Wiring

MCAC-2008-11 Air-cooled Modular Chiller
44
VV Cooper core, PVC insulation, PVC jacket, electric power cable
ZR-VV Anti-burning, Cooper core, PVC insulation, PVC jacket, electric power cable
YCW Heavy-duty, rubber-bushed, soft electric power cable
2. Specification of control wiring
Description
Length (m) Specification
Communication signal wiring
Wiring controller signal wiring
≤500m
KVVP-300/300 2×1.0mm
2
or
RVVP-300/300 2×1.0mm
2
Wiring controller power wiring ≤50m KVVP-300/500 3×1.5mm
2
Remark: shield twisted-pair should be used for communication effect.
3. Diameter selection of grounding wiring
1). Minimum section area of insulative grounding wiring is 1.5mm
2
;
2). Minimum section area of exposed grounding wiring is 4mm
2
;
3). Maximum section area of grounding wiring is 50mm
2
;
4) Commonly, section area is as follow list:
Phase section area of power supply wiring (S) Grounding and protection wiring
S≤16 S
16<S≤35 16
S>35 S/2
4. Power wiring
(1) Category selection of power wiring
Occasion Code
Compression
resistance
Description
Common VV 600V/1000V Cooper core, PVC insulation, PVC jacket, power cable
Anti-burn ZR-VV 600V/1000V Anti-burned, cooper core, PVC insulation, PVC jacket, power cable
Armored VV22 600V/1000V Armored, cooper core, PVC insulation, PVC jacket, power cable
Anti-oil & outdoors YCW 450V/750V Heavy-duty, rubber-bushed, soft electric power cable
(2) Diameter selection
Modules 30kW & 65kW
Wiring (mm
2
)
≤20m
Total Capacity (kW)
Diameter of Phase wiring Diameter of Zero wiring
30 10 6
60 10 6
90 25 10
120 35 16
150 50 25
180 70 35
210 95 50
240 95 50