5
■ Altitude
MCCB is designed for operation at altitudes under 2000m. At altitudes higher than 2000m,
change the ratings upon a service condition.
2. Altitude and Insulation voltage
■ Clearances
When drawing the electric power supply panel, please keep the distance of Insulation
clearance between MCCB and panel as listed in table.
Type A B
Front
Connection
type
N 150 50
H 150 50
L 150 50
■ Minimum insulation clearance
The dimension of all charging parts should be over the minimum insulation clearance
Insulating
voltage(Ui)
Min. insulation
clearance(X min)
600V 8 mm
1000V 14 mm
B. Service condition
Unit :mm
B B
A
X X
Altitude
(m)
Item
2000 3000 4000 5000
Withstand voltage [V]
3500 3150 2500 2100
Average insulating
voltage [v]
1000 900 700 600
Max. using voltage [V]
690 590 520 460
Current compensation
constant
1 x In 0.99 x In 0.96 x In 0.94 x In
To Next Page
Loading...
