I. Use and scope of application
GXW50 (DW50) universal circuit breaker (hereinafter referred to as circuit breaker) rated current from 200A to 1000A (capacity to 1250A), rated working voltage AC 400V, 690V, 50Hz. It is mainly used in distribution networks to distribute electrical energy, protect lines and power equipment from overload, undervoltage, short circuit, single phase grounding and other faults. It can also be used as an infrequent conversion of lines under normal conditions. It can achieve selective protection and precise operation, avoid unnecessary power outage and improve the reliability of power supply.
III.Technical parameters and performance
3.1 The rated current of the circuit breaker is shown in Table 1.
3.2 Rated insulation voltage 690V; rated working voltage 400V, 690V.
3.3 The rated short-circuit capability should be no less than 2.1Icu.
3.4 The rated short-circuit breaking capacity includes the rated limit short-circuit breaking capacity Icu and the rated operating short-circuit breaking capacity Ics (see Table 2).
3.5 Rated short-time withstand current Icw (see Table 3)
3.6 Intelligent controller protection features
The intelligent controller is GXT-50 short delay tripper with a maximum delay time of 0.25s. Has a long delay. Short delay. Instantaneous. Single phase grounding Protective function.
IV.Structure and accessories
The circuit breaker is a combination of frames, divided into drawers and fixed. The drawer type consists of intelligent controller and accessories, building block contact system, arc extinguishing system, manual operation and electric operating mechanism, closing and disconnecting accessories, and drawer unit. The fixed type consists of five units: intelligent controller and accessories, building block contact system, arc extinguishing system, manual operation and electric operating mechanism, and closing and disconnecting accessories. see picture 1.
V、Installation size and dimensions
5.1 The installation size and dimensions of the fixed circuit breaker are shown in the chart below.
5.2 The dimensions and dimensions of the drawer circuit breaker are shown in the chart below.