SU1363375A1 - Hybride power supply switch - Google Patents

Abstract

The invention relates to low-voltage electrical apparatus, providing uninterrupted power supply to responsible consumers. The purpose of the invention is to increase reliability in operation by monitoring the operability of the device. The device uses the control of the duration of the existence of a liquid metal bridge in the contact gap and, consequently, the control of the speed of movement of the movable contact 1. Such control is carried out by additional voltage sensors 10, 11 and timer 9 introduced into the device. Timer 9 is started simultaneously with the device start. If the time from the moment of forming a signal to connect to the backup power source I3 until the liquid metal bridge of contact 1 is broken does not exceed the set time in the device, the signal to connect the load 14 to the backup power source 13 is generated. Thus, the device switches the consumer while monitoring its serviceability, which ensures operational reliability. 2 Il. with S cl with O5 with. with SP

Description

one

The invention relates to low-voltage electrical apparatus, providing uninterrupted power supply to the responsible consumers.

The purpose of the invention is increased reliability.

Figure 1 is a functional diagram of a hybrid power switch; Fig. 2 is a timing diagram for the operation of the switch.

The hybrid power switch contains electrical contacts 1 and 2 with mechanical drives 3 and 4, controlled contactless switches 5 and 6 connected in parallel with electrical contacts 1 and 2, forced switching unit 7, the outputs of which are connected to the inputs of controlled contactless keys 5 and 6, and the input - with the output of block 8 control

Other outputs of which are connected to the inputs of mechanical drives of contacts 3 and 4, controlled contactless keys 5 and 6 and timer 9. The inputs of control unit 8 are connected to the poles of the power supply and the output of timer 9. The inputs of timer 9 are connected to the outputs of sensors 10 and 11 voltages whose inputs are connected to electrical contacts 1 and 2. One of the terminals of electrical contact 1 is connected to the main power source 12, and the electrical one to the non-contact one

pin 2 is to the backup power source 13, the common connection point of the electrical contacts is connected to the output for connecting the consumer 14.

Dp simplify the explanation of the device and work in figure 1 shows a single-phase power switch; m .- phase switch is arranged and operates similarly to single phase.

The hybrid power switch operates as follows.

Let, for example, the consumer be connected to the main source, i.e. contact 1 is closed and contact 2 is open. When switching (time tfl) from the control unit 8, signals are sent to the actuator 3 (to disconnect contact 1), to turn on the contactless key 5 (input 15), and to start the timer 9. Control unit 8 5 in 6 temporarily starts counting the set time t It is necessary to restore the electrical strength between the switch 6 and the drive for switching on the contact 2. If the time interval tp is the pain of a given interval t, then the time meter 9 generates a signal O

40 disable switch.

The process of switching from a backup source to the main one occurs in the same way as described.

Thus, the switch pi

45 does not switch the customer's battery while simultaneously monitoring the mechanical operation of the mechanical opening contact actuator, which increases the reliability of operation by eliminating

50 the possibility of equal currents occurring between the power sources due to the fault of the contact opening drive.

55

Claims (2)

Invention Formula A hybrid power switch containing electrical contacts with mechanical drives in each contact gap. The output signal of the voltage sensor 10 has a relay characteristic: equal to O when the contact voltage does not exceed the maximum voltage of the closed contacts (at the stage of the existence of a liquid bridge) and is equal to 1 when the contacts are open (at the stage of the existence of an arc). The timer 9 generates a switch enable signal (1) if the time period p is from the time of the formation of the switch signal t. 5 Till the moment of rupture of the liquid metal bridge t  openable contact is not larger than the specified time interval t, which characterizes the minimum allowable for This device’s design is the speed at which contacts open. This signal; permission enters the control unit 8, which, after a predetermined time has elapsed, sends the signal to 5 forced switching unit 7 (s; l forced locking of the contactless key 5), and, accordingly, removes the switch-on signal of the contactless key 5. 0 After a period of time t, p,. necessary for forcibly locking the contactless key 5, the control unit 8 generates a signal for switching on the backup source, key 6 and contact switching actuator 2. If the time interval tp is longer than the specified interval t ,, then the time meter 9 generates a signal O, 40 disable switch. The process of switching from the backup source to the main one is the same as described. Thus, the switch feeds 45 does not switch the consumer while at the same time monitoring the mechanical operation of the mechanical opening contact actuator, which increases reliability by exclusion. 50 the possibility of equalizing currents between the power sources due to a fault in the contact opening drive. Invention Formula A hybrid power switch containing electrical contacts with mechanical drives in each pole, the first and second controlled non-contact keys, the forced switching unit, the control unit, each of the first and second controlled non-contact keys connected to the electrical contacts of each pole, respectively. The first and second controlled contactless keys are connected to the first and second outputs of the control unit, respectively; the third output of the control unit is connected to to the control input of the force-switching unit, the first and second outputs of the force-switching unit are respectively connected to the switching inputs of the first and second controlled contactless keys, the fourth and fifth outputs of the control unit are connected respectively to the inputs of mechanical drives of electrical contacts, electrical contacts of poles one's own conclusions 8xo9nputoffa3 Input 1 Jescont ktnoeok yZ Siena / g start will measure f-l brE Set Lremeni's Sienal Output meter n (1pr 1kenitsu u SodOHHtfu VH- fnepfoj Pychod meter 1reny Forced Switch Node Input f UtHOff SMfOVfni fn are connected in series, the connection point is connected to the output for connecting the load, and the other terminals of the electrical contacts are connected respectively, to the terminals for connecting the main and backup power sources and to the first and second inputs of the control unit, so that, in order to increase the reliability of operation, the first and second voltage sensors and the timer are entered into it, each the voltage sensor is connected to the outputs of each corresponding controlled contactless key, the output of the first voltage sensor is connected to the first timer input, the output of the second voltage sensor is connected to the second timer input, the third timer input is connected to fifth output of the control unit, the timer output is connected to the third input of the driving-m unit: audio. MP tH tnep