Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 135

<Example of "F2" calculation>
Condition PLFY-VBM × 4 + PEFY-VMA × 1, C = 8 (refer to right sample chart)
F2 = 19.8 × 4/8 + 38 × 1/8
= 14.65
→ 16 A breaker (Tripping current = 8 × 16 A at 0.01 s)
4
* Current sensitivity is calculated using the following formula.
G1 = V2 × (Quantity of Type1) + V2 × (Quantity of Type2) + V2 × (Quantity of Type3) + ··· + V2 × (Quantity of Type14) + V3 × (Wire length[km])
<Example of "G1" calculation>
When connecting 3 units of the SEZ-KD respectively to a branch box with a wire that is 20 m long and 1.5 mm² in diameter, then connecting the branch box and PEFY-VMA to a
single breaker with a wire that is 100 m long in total and 2.5 mm² in diameter.
G1 = 2.4 × 3 + 3 + 1.6 + 48 × 0.02 × 3 + 56 × 0.1
= 20.28
G1 Current sensitivity
30 or less 30 mA 0.1 seconds or less
100 or less 100 mA 0.1 seconds or less
Wire thickness
1.5 mm²
2.5 mm²
4.0 mm²
1. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.
2. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops.
Make sure the power-supply voltage does not drop more than 10%.
3. Specific wiring requirements should adhere to the wiring regulations of the region.
4. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 60245 IEC57). For
example, use wiring such as YZW.
5. Install an earth longer than other cables.
OCH632A
V3
48
56
66
Sample chart
6000
600
60
10
1
0.1
0.01
1
Rated Tripping current (x)
135
SAMPLE
2 3 4 6 8 10 20
C