3results about How to "Safe and stable performance" patented technology

The utility model relates to circuit control technical field especially, relates to an automatic switching controller device, solved the problem that the power left over of each single -way system in different period can not satisfy the demand of new equipment, real -time dynamic residual power cannot carry out reasonable distribution utilization. A kind of automatic switching controller device, including several groups of power supply system, for providing multiple three-phase ac power supply;Several groups of load circuit;Automatic switching controller, for monitoring and adjusting the load of power supply system;Disconnecting switch, for isolating the electrical connection between power supply system and load circuit;Change-over switch, for cooperating automatic switching controller to switch the connection loop between load circuit and power supply system, automatic switching controller is electrically connected with power supply system, load circuit respectively by wire connection. The utility model can carry out unified distribution power supply, can make transformer and other power supply equipment load even, improve power supply quality, improve equipment utilization.

The utility model discloses a kind of industrial and mining lamps, it includes installing lamp shade, the inside of this installing lamp shade is equipped with lamp shade chamber, the surface of this lamp shade chamber is equipped with light source aluminum substrate, the outside cover of this light source aluminum substrate is equipped with lens, the middle part of this lamp shade chamber is equipped with center convex position, the middle part of this light source aluminum substrate is equipped with first center opening, the middle part of this lens is equipped with second center opening, the center convex position sequentially passes through this first center opening and this second center opening, the outer surface of this center convex position is evenly equipped with a plurality of breathable aperture, air convection path can be formed by this breathable aperture. The industrial and mining lamp of the utility model enhances the heat dissipation performance under long time operating condition, avoids the phenomenon that light source light decay or power overheating due to heat accumulation, guarantees luminaire safe and stable operation, and the use effect of convenient installation and safe and stable.

This invention provides a DC battery pack repair device. A 220V AC power supply is connected to three parallel circuits. The first circuit connects a first switch SB1, a second switch SB2, and an intermediate relay kA1. The normally open contact of the first switch SB1 is connected in parallel with the normally open contact of kA1. The second circuit is divided into two branches: one branch connects the normally open contact of kA1 and a stop indicator light; the other branch connects the normally closed contact of kA1 and a working indicator light. The third circuit connects a single-phase bridge rectifier UR. The single-phase bridge rectifier UR connects a changeover switch, parallel coils of KM1, KM2, and KM3, and SA1. The voltage across the battery pack is connected to the device via DC positive and negative terminals. In the DC circuit, the main contacts of DC contactors KM1, KM2, and KM3 are connected in series with discharge resistors R1, R2, and R3, respectively. After the three circuits are connected in parallel, a DC shunt FL and an ammeter are connected in series. This invention enables deep equalization discharge and recharging of the substation battery pack, reactivating the battery plates that have softened due to long-term float charging.