Application

DW15 series conventional circuit breaker (hereinafter referred to as circuit breaker) and DWX15 series conventional current-limiting circuit breaker (hereinafter referred to as circuit breaker), rated current 100A~4000A  (current-limiting circuit breaker up to 630A), AC50Hz and rated voltage 380V~660V (Inm≥1600A only class of 380V). They are mainly used to distribute electric energy, protect the circuit and power equipment against overload, under-voltage or short-circuit in the distribution network.DW15-630 also can be used to protect the motor against overload, under-voltage or short-circuit in power grid of AC 50Hz with voltage 380V, in addition to the fixed type structure, the circuit breaker also has with draw able type. Under normal conditions, this circuit breaker can be used to change over the circuits infrequently, DW15-630 and current-limiting circuit breaker also can be used for infrequent starting of motor. The current-limiting circuit breaker is especially suitable for networks that may come across heavy short-circuit current.

The products are in accordance with the standards IEC60947-2, GB14048.2 and JB8590.1.

Normal working condition and mounting conditions

Ambient temperature: -5℃ ~ 40℃, daily average over 35℃

Altitude not more than 2000m;

Ambient conditions: relative humidity not more than 50% at 40, if lower temperature humidity can be higher, on the month when maxi average humidity occurs the Temperature shall be not more than 25℃, on this month the maxi average humidity shall not more  than 90%, and there has considered the mist covering the product

Polluted class: 3 gradeInstallation class: 3 gradeMounting conditions: the mounting inclined angle shall not more than +5°

Impact vibration: there shall have no severe vibration, impact and vibration.

Characteristics

DW15-200, 400 and 630 circuit breakers are arranged in tridimensional, the contact system and both left and right side plates of instantaneous over-current release are installed on the same insulation board. There is arc-extinguishing system in the upper part, the operating mechanism can be installed right ahead or right side, there are "ON" and "OFF" indications and manual breaking button. There is shunt release on the upper left side, and there is an under-voltage release that is connected with tripping half-shaft on the back. The rapidly saturable current transformer or current-to-voltage converter is put on the lower bus. Under-voltage delay device, thermal relay or semiconductor release can be installed in lower part respectively.

DW15-1000, 1600, 2500 and 4000 circuit breakers are arranged in tridimensional, they are composed of base frame, side plate and beam, these form into the framework, contact system of each phase is set on the base frame, with arc-extinguishing chamber installed at the top. The operating mechanism is set in right front, being connected with the contact system through the main shaft. The electric operating mechanism is integrated with mechanism through square shaft and is mounted in the lower part of circuit breaker, used for energy storing or direct closing of circuit breaker, the closing after energy storing will be at the responsibility of energy-releasing electromagnet. There is de-bounce device in the upper of left side plate, used for preventing circuit breaker from bouncing during opening. Various over-current releases are mounted in the lower part of circuit breaker according to different requirements, under-voltage and shunt releases as well as control part of electric operating mechanism are arranged on the left side, there into, the under-voltage and shunt releases are connected with the mechanism of amplification through the release, for reducing tripping force of circuit breaker. The auxiliary contacts are used for connecting with the secondary circuit, the panel has indicators of "│", "○" and "ENERGY STORAGE" for showing the working position ofcircuit breaker, also has buttons "│" and "○" for closing and opening. DW15-1000 and 1600 circuit breakers have front manual operated handles; DW15-2500 and 4000 areattached with manual operated handles for overhaul purpose (both of them can be dismantled).

Model