DW45 series Air Circuit Breaker (hereinafter referred to as circuit breaker) is applied in distribution network with AC 50HZ, rated voltage 690V (or below), and rated current 200A-6300A. It is used to distribute electric energy, protect circuit and power supply from damage of defaults, such as overload, under voltage, short circuit, single-phase grounding. Circuit breaker has intelligent protection function, and its selective protection is accurate. Besides, it can improve the reliability of power supply and avoid unnecessary blackout. At the same time, it possesses open-type communication interface to realize four-remote function, namely remote control, remote regulating, remote measurement and remote communication, in order to meet the requirement of control center and automatic system. This circuit breaker has isolation function.
Product Details
Rated voltage 660(690)V, rated current 400-6300A
With telecontrol, teleadjustment, telesignalization and telemetering interface
According to standards: IEC60947-2, GB14048.2
Controllers H communication/M ordinary intelligent/L economic type can be available
Overload for long-time inverse time
Each kind of material and specification can be custom-made
Protection Degree: IP30
1. Rated current in scope of frame size
1600 Type In: 200A, 400A, 630A, 800A, 1000A, 1250A, 1600A
2000 Type In: 630A, 800A, 1000A, 1250A, 1600A, 2000A
3200 Type In: 2000A, 2500A, 3200A
4000 Type In: 2500A, 3200A, 4000A
6300 Type In: 4000A, 5000A, 6300A
2. Number of poles
3-default
4-4 pole
3. Installation
Fixed type-horizontal, vertical
Drawout type-horizontal, vertical
4. Intelligent controller
M type
2M type: digital display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
3M type: LCD display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
H type
2H type: communication function, digital display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
3H type: communication function, LCD display, over-current protection (overload, short delay, instantaneous), 4P or 3P+N have earthing protection.
Intelligence controller types: H (intelligence type), M (Standard type), L (Economy type)
Equipped with overload long delayed inverse time limit, short delayed inverse time limit, constant time-lag and instant function, adjustable according to user requirements.
Single ground protect function.
Display function: Setting current display, action current display and each line voltage main display (voltage display option available upon request when placing order).
Alarm function: Overload alarm.
Self test function: Overheating self test, microcomputer self diagnosis.
Test function: Intelligent controller of operating characteristic.
Normal Use & Installation Conditions
Ambient air temperature: Upper limit value not exceeding +40ºC, lower limiting value not exceeding -5ºC, average value not exceeding +35ºC. (Special orders expected).
Altitude: Installation address altitude not exceeding 2000m.
Atmospheric conditions: Atmosphere relative humidity not exceeding 50% when ambient air is +40ºC. Higher relative humidity is permissible at lower temperatures, with an average max relative humidity of 90% in the wettest month (average max temperature of +25ºC). Condensation on the product surface due to temperature changes must be considered. Please consult technical specifications when exceeding regulated requirements.
Level of protection: IP30.
Class of pollution: Class 3.
Use classes: Class B or Class A.
Installation condition: Must be installed according to instruction guidelines, with vertical gradient not exceeding 5° (mine breaker vertical gradient not exceeding 15°).
Frequently Asked Questions (FAQ)
Q
What is the application range of this Air Circuit Breaker (ACB)?
It is applied in distribution networks with AC 50Hz, a rated voltage of 690V or below, and a rated current range from 200A to 6300A. It is primarily used to distribute electric energy and protect circuits and power equipment from damages caused by overload, under voltage, short circuit, and single-phase grounding.
Q
What functions do the intelligent controllers offer?
The controllers offer overload long delayed inverse time limit protection, short delayed inverse time limit protection, constant time-lag, instantaneous functions, single ground protection, alarm indicators, and self-testing features. Various types (H, M, L) are available to match different operational requirements.
Q
What are the altitude and temperature requirements for normal installation?
The installation altitude should not exceed 2000m. The ambient air temperature should be between -5ºC and +40ºC, with an average daily temperature not exceeding +35ºC.
Q
Does the circuit breaker support remote communication?
Yes, controllers with communication interfaces (such as the H-type) support the four-remote functions: remote control, remote regulating, remote measurement, and remote communication, enabling integration into automatic systems and control centers.
Q
What is the protection degree and pollution level of the unit?
The circuit breaker has a protection level of IP30 and is rated under Class 3 for pollution control. It complies with standards IEC60947-2 and GB14048.2.
Q
What installation variants are supported?
It supports both Fixed and Drawer type configurations. It can be installed either horizontally or vertically, with a maximum vertical gradient of 5° (or up to 15° for mine breaker applications).
UniWave Electric
