Features:
1) DW45 series air circuit breaker (ACB) intellect type universal circuit breaker is used for controlling and protecting low voltage distribution network
2) DW45 ACB usually installs in the low voltage distribution cabinet as the main switch for the main protection, technique performance has reached the same type products at advanced standard
3) The air circuit breaker conform to IEC 60947-2, IEC 60947-4 standards
Normal operation and mounting requirements:
1) Altitude for installation: <2,000m
2) Ambient temperature: -5~+40oC (min. value within -10~ -25oC applicable, >+40oC or <-25oC need negotiation)
3) Humidity:
a) Relative humidity of atmosphere: <50% when the temperature kept under +40oC
b) Higher relative humidity can be permitted at lower temperature
c) Monthly average humidity is under 90% when the min. monthly average humidity
is under +25oC in the most watery month
d) Meanwhile the coagulate water occurred on the surface of products should be taken into account
4) Pollution degree: 3
5) Installation category: IV, for auxiliary circuit the under-voltage release coil and primary coil of voltage transformer are the same with breaker, the others are construction features
Intelligent release has such functions as below:
1) Reverse long time delay for over load protection, reverse short-time relay, definite short-time delay, and instantaneous for short-circuit protection
2) Earth fault protection
3) Overload alarm
4) Test
5) Load monitoring
6) Functional display
7) Diagnostic
8) MCR
9) Thermal memory
10) Contact abrasion indication
11) Fault memory |
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