KEHUA TECH KR-RM Series, Руководство пользователя

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KR-RM Series(1
～
3kVA) UPS
User Manual 4 Installation
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17
4.4 Wire Selection
4.4.1 Selection of Input Air Switch
Add an air switch or power distribution box which matches with the power of UPS before the input
wire of UPS to isolate the mains. In consideration of the charging power of UPS and the inrush
current at the power on moment, the current of the selected air switch should be 1.5
～
2 times of the
maximum input current of UPS. Besides, the selected air switch should be without the power leakage
protection to mis-operation. The power distribution box is better to be made by the professional
company. The selection of air switch refers to Table4-2.
Table4-2 The recommended list for the input air switch of KR-RM series
Model
KR1000-RM KR2000-RM KR3000-RM
Max.
current Recommended
air switch Max.
current Recommended
air switch Max.
current Recommended
air switch
AC
input(A)
6 10 12 20 18 32
4.4.2 Selection of the Cross-sectional Area of Output Power Wire
For the selection of the cross-sectional areas of AC output wire and battery wire of UPS, please refer
to Table4-3 for the corresponding recommended value and choose upwards.
Table4-3 The ampacity of the recommended cross-sectional areas of wire of UPS
Cross-sectional area(mm
2
)
1 1.5 2.5 4 6 10 16 25
Ampacity(A)
Rubber
(25
℃
)
8 12 20 28 42 70 96 125
Plastic
(25
℃
)
6 9 15 20 30 50 64 100
4.5 Electrical Connection
Ensure all air switches of UPS are switched off and place UPS well, do the electrical connection.
Use sockets in the AC input and output of KR-RM series(1
～
3kVA)UPS. Connect the AC input
socket with the mains socket by the power wire and the load power wire plugs in the output socket.