nader NDW3 Series Manual page 90

4000
6300
7500
Note:
1. The table indicates the copper bar specifications adopted when the circuit breaker is under the ambient temperature of
+40℃ and the open wide installation under the heating condition meets the stipulation in GB/T 14048.2. If the
temperature is higher than +40℃, the quantity of copper bar should be increased, or the capacity should be reduced.
2. The above data is calculated according to the test and theory, and for reference only.
3. The maximum permissible temperature of the copper bar is no more than +110℃.
4. Copper bar electrical clearance (rated working voltage ≥800V, electrical clearance ≥25mm; rated
working voltage ≤690V, electrical clearance ≥15mm), the altitude exceeds 5000m, the relative
humidity exceeds 90%, the electrical clearance should be based on GB/T 20645 7.1.1 The content of Table
1 has been adjusted.
5.4 The power loss of the incoming and outgoing lines of the circuit breaker
(ambient temperature +40°C)
The power loss of the incoming and outgoing lines of the circuit breaker
Model
NDW3-1600
NDW3-2500
NDW3-4000
NDW3-6300
NDW3-7500
Internal & confidential file
File No.:NDT2920202
800~1600
2000
2500
3200, 4000
4000
5000, 6300
4000
5000、6300
7500
Power loss of the fixed type
≤123.5 W
≤356.8 W
≤486.7 W
≤787 W
≤968 W
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File Version:4
80×5
80×10
80×10
100×10
100×10
100×10
100×10
100×10
120×10
Power loss of the drawout type
≤331.5 W
≤823.4 W
≤856.8 W
≤1145 W
≤1480 W
3
2
3
5
5
6
5
6
8