RU2406201C2 - Power supply control board - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: control board is intended for controlling a.c. and d.c. power distribution among power consumers, monitoring storage batteries state, protecting power supply units from overcurrent and controlling level of supply voltages. The device is designed to: recieve and distribute supply voltages coming from three independent a.c. sources 280/220 V with frequency 50 Hz (industrial network, generator 1, generator 2); recieve and distribute supply voltages coming from three indepedent d.c. sources including rectifying units (27 V voltage is used) and from storage batteries (24 V voltage is used); automatic transfer to power supply from storage batteries when voltage is lost from two 27 V sources; monitoring of storage batteries state (charge, discharge and connection). Magnitude of swithing a.c. current - to 16 A per each phase. Magnitude of switching direct current - to 30 A and to 50 A per four lines of each nominal. The unit ensures: light indication to indicate primary voltage availability at input; light indication of voltage supply to output; a.c. network phases voltage; direct 27 V voltage; noise alarm of storage batteries state; sequence of phases at "AIR CONDITIONER" output; mean time operation.

EFFECT: expanded functional capabilities.

7 cl, 8 dwg

Description

Technical field

This technical solution relates to the field of conversion and distribution of electricity, for example, in automated control systems.

State of the art

An analogue of this technical solution is a LOW-VOLTAGE COMPLETE DEVICE (patent (certificate) No. 26695 for utility model, application 2002122293/20 of 08.23.2002, MPK7 Н02Н 7/06, registration December 10, 2002, Bul. 34, applicant of Cheboksary Electric Appliance Plant OJSC ), containing the first, second and third input terminals for supplying input voltage, the first, second and third output terminals for supplying output voltage to the equipment terminals, a three-phase switch, the input terminals of which are connected to the corresponding input terminals, the first starter, the first and second input terminals of which are connected respectively to the first and second output terminals of the three-phase switch, and the output terminals are connected to the corresponding output terminals of the line voltage, as well as an automation unit containing the first and second terminals of the automation unit, the winding of the first relay, as well as the first, second , the third and fourth NC contacts and the first, second and third NO contacts, characterized in that the thermal relay winding is introduced, the first terminal of which is connected to the third output terminal phase switch, and the output terminal is connected to the third input terminal of the first starter, the second starter, the winding of which is the winding of the second relay, and the first, second and third input terminals of which are connected respectively to the first, second and third input terminals of the first starter, whose winding is the winding the first relay, and the first, second and third output terminals of which are connected respectively to the first, second and third output terminals of the first starter, and the first and second resis ora, the fourth NO contact and the fifth NO contact, while the first terminal of the automation unit is connected to the second terminal of the automation unit through a series of connected first NO contact, the first NO contact, the first resistor, the second NO contact and the winding of the second relay, the third terminal of the automation unit is connected to the second terminal of the automation unit through the third disconnect contact, the second make contact, the second resistor, the fourth make contact and the winding of the first relay , the fourth terminal of the automation unit is connected to the second terminal of the third NC contact through the third make contact, the fifth terminal of the automation unit is connected to the fourth terminal of the automation unit through the fourth make contact, and the sixth terminal of the automation unit is connected to the fifth terminal of the automation unit through the fifth NC contact, the second make, second make, fourth make and fifth make contacts are controlled by the winding of the first relay, the first make, the third make make and even the first opening contact is controlled by the winding of the second relay, and the first opening contact is controlled by the winding of the thermal relay.

The disadvantage of this analogue is the small functionality that does not allow to realize the given requirements.

Another analogue of the claimed technical solution is a LOW-VOLTAGE COMPLETE DEVICE (patent (certificate) No. 26696 for utility model, application 2002122294/20 of 08.23.2002, MPK7 Н02Н 7/06, registration December 10, 2002, Bul. 34, applicant of Cheboksary Electric Appliance Plant OJSC "), Containing the first, second and third input terminals for supplying input voltage, the first, second and third output terminals for supplying output voltage to the equipment terminals, a three-phase switch, the input terminals of which are connected to the corresponding input terminals, the first a starter, the first and second input terminals of which are connected respectively to the first and second output terminals of the three-phase switch, as well as an automation unit containing the winding of the second relay, as well as the first, second, third and fourth NC contacts and the first, second and third NO contacts in that a thermal relay winding is introduced, the first terminal of which is connected to the third output terminal of the three-phase switch, and the output terminal is connected to the third input terminal of the first starter, the second starter, whose current is the winding of the second relay, and the first, second and third input terminals of which are connected respectively to the first, second and third input terminals of the first starter, whose winding is the winding of the first relay, and the first, second and third output terminals are connected respectively to the first, second and the third output terminals of the first starter, the third starter, the first, second and third input terminals of which are connected respectively to the first, second and third output terminals of the first starter, the first, second and third I output terminals are connected respectively to the first, second and third output terminals, and the first and second resistors, a fuse, the windings of the third, fourth and fifth relays, the fourth, fifth and sixth closing contacts and the fifth, sixth, seventh and eighth disconnecting contacts are introduced into the automation unit contacts, while the first terminal of the automation unit is connected to the second terminal of the automation unit via series-connected first make contact, parallel to which the second make contact, the first make contact, the second opening contact, the winding of the first relay and the third opening contact, the second terminal of the thermal relay winding is connected to the first terminal of the third opening contact through a fuse and the winding of the fourth relay connected in series, the sixth opening contact connected in series, the third closing contact, the fourth connected in parallel make contact, fifth make contact, winding of the third relay, the third terminal of the automation unit is connected to the second terminal of the unit and automation through the winding of the second relay, the fourth terminal of the automation unit is connected to the second terminal of the automation unit through the winding of the fifth relay, the fifth terminal of the automation unit is connected to the second terminal of the automation unit through the first resistor and the seventh NC contact connected in series, the sixth terminal of the automation unit is connected to the second terminal the automation unit through a second resistor connected in series, an eighth opening contact, the seventh terminal of the automation unit is connected to the second terminal of the first resistor through the fifth make contact, and with the second terminal of the second resistor through the sixth make contact, the first starter, the first make contact, the fifth make contact, the sixth make contact and the eighth make contact are controlled by the winding of the first relay, the second make contact, the first make contact, the fourth make the contact and the fourth make contact are controlled by the winding of the second relay, the second starter, the second make contact, the third make contact, the seventh make contact and the fifth make the make contact is controlled by the winding of the third relay, the sixth make contact is controlled by the winding of the thermal relay, the third make contact and the third starter are controlled by an external switch.

The disadvantage of this analogue is the small functionality.

The next analogue of the proposed technical solution is the DEVICE FOR AUTOMATIC TURNING THE RESERVE (patent (certificate) No. 26701 for a utility model, application 2002123133/20 of 04.09.2002, IPC7 H02J 13/00, registration on 10.12.2002, Bul. 34, applicant of Cheboksary Electric Appliance OJSC factory ”), containing a three-phase, with a zero wire, the first input of the network, relays of the first, second and third phases, the windings of which are connected between the corresponding phases and the neutral wire of the first input of the network, a voltage control relay of the first input of the network, the winding of which is connected between the first phase of the input of the network and the neutral wire through series-connected make contacts of the relays of the second and third phases, the three-phase with the neutral wire the second input of the network, the state relay of the first input, the winding of which is connected in series with the disconnect contacts of the first, second and third phases between the third phase and the neutral wire of the second input, in addition, a reliable power bus, the phases of which are connected through the corresponding closing contacts of the voltage control relay of the first input networks with the corresponding phases of the first input of the network, and through the corresponding make contacts of the state relay of the first input - with the corresponding phases of the second input of the network, characterized in that three disconnect contacts of the first input of the network are introduced, each of which is connected between the corresponding phases of the diesel generator unit and tires reliable nutrition.

The disadvantage of this analogue is the small functionality that does not allow to realize the given technical requirements in full.

The next analogue of the proposed technical solution is a DISTRIBUTION PANEL (patent RU 60797 U1 for utility model, application 2006138211/22 of 10.31.2006, IPC Н02В 13/00, applicant Closed Joint-Stock Company Electrotechnical Plant "HEXAR" CJSC ETZ "HEXAR" registration 01/27/2007 )

1. Distribution panel, consisting of a housing, while inside the housing there are three-phase power transformers, relays, fuses, power transformers, power devices, switching and protective devices, characterized in that the primary and secondary windings of the three-phase power transformers are connected in a "triangle- star ", while between the primary and secondary windings of power three-phase transformers a single-layer winding is grounded on the housing, an individual light indicator is additionally introduced fuse fuse insertion, and at least one of the power transformers has a thermal limiter connected in series with its primary winding.

2. The panel according to claim 1, characterized in that as an individual light indication, LEDs are used, each of which is connected in series with the circuit of each fuse.

3. The panel according to claim 2, characterized in that the LEDs are mounted on a board located horizontally above the fuses.

4. The panel according to claim 1, characterized in that it is equipped with current clamps - an AC / DC multimeter.

5. The panel according to claim 1, characterized in that galvanized squares are installed at the bottom of the case to provide grounding of the cases of power three-phase transformers.

The disadvantage of this analogue are:

- small functionality that does not allow to realize the requirements of the technical specifications in full;

- insufficient reliability of the functioning of the electrically supplied product.

The closest analogue (prototype) of the claimed technical solution is a DISTRIBUTION POWER SUPPLY DEVICE (patent RU 67787 U1 for utility model, application 2007127204 dated July 16, 2007, IPC Н02В 13/00, PUBLISHED on 10.27.2007, BULL. No. 30), consisting of the main power panel (“Power-Up Panel”), the three inputs of which are connected respectively to the three inputs of the uninterruptible power supply feeders (“UPS FEED IN”), unwarranted power supply (“Non UPS FEED IN”) and backup main power supply (“MAIN FEED RESERVE IN” ), and the three outputs are connected respectively to the outputs of the emergency lighting device (EMERGENCY LIGHTING), external sockets (SOCKET) and fire alarm (FIRE SIGNALIZING), AC panel (AC Panel), two inputs of which are connected respectively to two outputs of the main power panel: uninterruptible power supply output UPS power supply (“UPS OUT”) and non-guaranteed power output (“Non UPS OUT”), and the outputs are connected to consumers of voltages 220 V and 380 V, DC panels (“DC Panel 28 V”), the four inputs of which are connected respectively to four inputs of the device - outputs of an external DC / DC converter (“DC CONVERTER OUT”) 28 V INL1-4, and the output dy are connected to the outputs of the 28 V device - the inputs of consumers of voltage 28 V, two uninterruptible power supplies of the UPS ("220 V UPS # 1" and "220 V UPS # 2"), the inputs and outputs of which are connected respectively with the outputs of 220 V and panel inputs alternating current, characterized in that the main power panel consists of three control and signaling paths, each of which contains three indicator lamps connected in parallel with the input, one in each phase, a circuit breaker connected in series, an overload protection device for RCDs and normally closed contacts of own contactors, connected to the phase through normally-locking blocking contacts of adjacent path contactors, voltmeters connected via seven-position switches with three phases of each path, an operating hours counter connected to the phase A circuit and neutral at the output of the main power panel, three output control circuits , each of which contains a circuit breaker and an indicator lamp connected in parallel to the output, as well as a fire alarm connected to the output of the indicator lamp panel The AC panel contains several control and signaling circuits consisting of circuit breakers connected between the input and output and connected to the indicator lamps by the output, an air conditioner power switch, circuit breakers connected to it located between the input and output to the air conditioners, and connected in parallel indicator lamps, an external equipment power switch connected to it sequentially automatically to one of the output phases The first switch and the indicator lamp connected in parallel with one of the output phases, the DC panel contains two types of control and indication circuits, consisting of indicator lamps connected in parallel to the input, connected in series between the input and output of the circuit breakers and the indicator lamps connected to the output.

The disadvantages of the prototype are:

- insufficient functionality that does not allow to implement the specified technical requirements;

- unacceptable weight and size parameters.

The essence of the technical solution

The well-known power control panel contains a switching unit for BCS networks, the four inputs of which are connected to the output of an external power supply and protection unit 24V electric BPZE, an industrial network and the outputs of Generator 1 and Generator 2, and the first two outputs with an input BPZE and Transit output, the primary control unit BKPS network, the input of which is connected to the first output of the BCS, the phase sequence block of the BChF, the input of which is connected to the third output of the BCS, and the output is to “Air conditioning”, the consumer connection block of the BPP, the input of which is connected to the output of the BPZE 380/220 V , and two outputs are connected respectively with the outputs to uninterruptible power supply IBEP and sockets.

The purpose of creating a technical solution is to create a multifunctional power distribution device for a mobile control center, convenient in operation, acceptable dimensions and mass.

To obtain this technical result, the device further comprises a secondary voltage switching unit BKVN, three inputs of which are connected respectively to the outputs of the rectifying devices VU1 and VU2 and the battery, and eight outputs with eight LINE 1-LINE 8, a secondary control unit of the secondary power supply network and a battery charge control unit BKZA, the inputs of which are connected respectively with the ninth and tenth outputs of the switching unit of the secondary voltage BKVN.

The network switching unit contains three three-phase voltage switching paths, each of which consists of a switch, a contactor, and an indicator element, the contactor windings are connected to the 24 V BPZE input, and the contactors inputs are connected respectively to the switch contacts using the TS, AIR CONDITIONER, and computing the VK complex, the inputs of the TS switch are connected to the BKPS outputs, and the CONDITIONER and VK switches are connected respectively to the outputs of the BCF (Air Conditioner) and BCF (VK), indicator elements, consisting of tion of the indicator lamp connected in series and a resistor respectively connected to the output terminals "TS" switch "PROM. NETWORK ”,“ GENERATOR 1 ”and“ GENERATOR 2 ”.

The primary network control unit contains a “Input voltage control” voltmeter with parallel-connected measurement sockets connected via a switch to the BCS, indicator elements consisting of an indicator lamp and a resistor connected to three phases A, B, C, and a TS indicator element connected to phase A.

The phase rotation unit contains a “Phase rotation” switch, connected to two positions A, B, C and B, A, C, and two indicator elements, consisting of an indicator lamp and a resistor, connected to phase A of the supply voltage of “AIR CONDITIONER” and one of phases of supply voltage "VK" from BCS.

The consumer connection block contains two circuit breakers “IBEP” and “Sockets”, switching respectively the power supply to uninterruptible power supplies “IBEP” and “Sockets”, indicator elements “IBEP” and “Sockets” connected to the output of one of the phases of the corresponding circuit breaker .

The secondary voltage switching unit with the secondary network control unit and the battery charging control unit contains a monitoring and alarm board connected to the inputs “+ ВУ1”, “+ ВУ2” and the battery “+ battery” and the ground bus “-ShZ”, and three diodes through which linear paths are connected to these inputs of VU1, VU2 and the battery, circuit breakers connected respectively to the outputs of the LINE 1 - LINE 8 unit, indicator elements consisting of a series-connected indicator and resistor and connected respectively to the outputs of the car protection mat, voltmeter, DC voltage control with parallel measurement sockets connected to the SHZ input and a common circuit of circuit breakers, operating hours counter "RUN TIME" connected in parallel to the voltmeter, indicator lamps "Battery is discharged", "Battery OFF" and “Operation from the battery”, connected to the corresponding outputs of the control and signaling board, an electromagnetic capsule connected to the corresponding contacts of the control and signaling board.

The control and signaling board of the secondary voltage switching unit contains a voltage stabilizer, the input of which through the diode is connected to the “+ Battery” input, three paths for monitoring the state of the battery, each of which is a comparator, at the inputs of which signal levels + battery from the battery are supplied, and other inputs - signals of a given level from a resistor rheostat circuit, a chain of inverters connected respectively to the outputs “Battery discharged”, “Battery disconnected” and “Operation from battery”, a chain of inverters and a transistor output stage, with a union of BF1 output for connecting a cap of an electromagnetic differential.

List of figures, drawings and other materials

Figure 1 shows the structural diagram of the power control panel.

Figure 2 shows a schematic diagram of an electrical circuit block switching networks.

Figure 3 shows the electrical circuit diagram of the control unit of the primary network.

Figure 4 shows a diagram of an electrical circuit block phase sequence.

Figure 5 shows a diagram of an electrical schematic block 220 V consumers.

Figure 6 shows the electrical circuit diagram of the switching unit of the secondary voltage 27/24 V, the control unit of the secondary network and the battery charge control unit.

Fig. 7 is a schematic diagram of an electrical circuit board for monitoring and signaling a secondary network control unit and a battery charge control unit.

On Fig is a drawing of the front panel of the power control panel.

An example of the implementation of a technical solution

The functional units shown in the structural diagram have the following notation:

1 - BCS - block switching networks;

2 - BKPS - control unit of the primary network;

3 - BChF - phase rotation unit;

4 - BPP - unit for connecting consumers 220 V;

5 - BKVN - switching unit of the secondary voltage 27/24 V;

6 - BKVS - control unit of the secondary network;

7 - BKZA - battery charge control unit.

Additionally, the input and output circuits are indicated on the diagram:

8 - from the power supply and protection of the electric BPZE 24 V, 9 - from the industrial network, generator 1, generator 2, 10 - from the BPZE 380/220 V, 11 - from the external rectifier device VU1, 12 - from VU2, 13 - from the battery , 14 - exit to BPZE, 15 - to air conditioning, 16 - transit circuits, 17 - to uninterruptible power supply, 18 - to sockets, 19 - to line 1-line 8.

In Fig.2 - Fig.7 additionally indicated: A1 - control and alarm board, C1-C5 - capacitor, DA1 - stabilizer chip, DA2-DA4 - comparator chip, DD1-DD3 - inverter, R1-R22 - resistor, VD1- VD6 - diode, VT1, VT2 - transistor, BF1 - differential electromagnetic capsule, HG1-HG11 - semiconductor switching lamp, HL1-HL11 - single indicator, KM1-KM3 - contactor, P1, P2 - voltmeter, P3 - operating time counter, QF1 , QF2 - circuit breaker, QF3-QF10 - circuit breaker, S1-S3 - switching switch, S4-switch, S5 - three-pin toggle switch, X1-X4 - plug, X5 -X7 - socket, X8 - plug, X9-X22 - socket, XS1, XS2 - control socket, XT1-XT4 - terminal.

Product purpose

The power control panel is designed to control the distribution of AC and DC electricity among consumers, to monitor the condition of batteries, to protect power sources from overcurrent, and to control supply voltage levels.

Product Specifications

The device carries out:

- reception and distribution of supply voltages coming from three independent alternating current sources 280/220 V, frequency 50 Hz (industrial network, generator 1, generator 2);

- reception and distribution of supply voltages coming from three independent DC sources, including from rectifier devices (using voltage 27 V) and from storage batteries (using voltage 24 V);

- automatic switch to battery power when voltage drops from two 27 V sources;

- control of the condition of batteries (charge, discharge, connection).

The value of the switched alternating current is up to 16 A for each phase. The value of the switched direct current is up to 30 A and up to 50 A along four lines of each nominal value.

The distribution of supply voltages across the contacts of the input and output connectors is presented in the table.

Connector Contact number Voltage Note one A X1 2 B 380/220 V input 3 C four N one A X2 2 B 380/220 V input 3 C four N one A X3 2 B 380/220 V input 3 C four N one +24 V entrance X4 2 0 V +24 V one A X5 2 B 380/220 V output 3 C four N one A X6 2 B 380/220 V output 3 C four N one A X7 2 B 380/220 V output 3 C four N one A X8 2 B 380/220 V input 3 C four N one A X9 2 N 220V output 3 body one B X10 2 N 220V output 3 body one C X11 2 N 220V output 3 body one A X12 2 N 220V output 3 body one B X13 2 N 220V output 3 body one C X14 2 N 220V output 3 body

Connector Contact number Voltage Note X15 one 27 V Output +27 V (50 A) 2 0 V X16 one 27 V Output +27 V (50 A) 2 0 V X17 one 27 V Output +27 V (50 A) 2 0 V X18 one 27 V Output +27 V (50 A) 2 0 V X19 one 27 V Output + 27 V (30 A) 2 0 V X20 one 27 V Output +27 V (30 A) 2 0 V X21 one 27 V Output +27 V (30 A) 2 0 V X22 one 27 V Output +27 V (30 A) 2 0 V + VU1 XT1 +27 V +27 V input + VU1 XT2 +27 V +27 V input + Battery XT3 +24 V +24 V input SHZ XT4 +0 V Ground bus

The device provides:

- light indication of the presence of primary voltage at the input;

- light indication of voltage supply to the output;

- measurement of phase voltage of an alternating current network;

- measurement of a direct voltage of 27 V;

- sound signaling of battery condition;

- a change in the order of phase rotation at the output of "CONDITIONER";

- control of operating hours.

Overall dimensions of the device (width × depth × height) - 560 × 372 × 357 mm.

The mass of the device is not more than 30 kg.

It is allowed to place the device in land vehicles on a wheeled chassis, provided that it functions in a parking lot.

The device is designed to operate in the following climatic conditions:

- operating temperature - from 263 to 323 K (from minus 10 to plus 50 ° C);

- relative humidity - 98% at a temperature not higher than 298 K (25 ° C);

- reduced atmospheric pressure - 60 kPa (450 mm Hg);

- limit temperature - from 223 to 338 K (from minus 50 to plus 65 ° C).

Product Composition

The main components of the device are shown in the table.

Designation Name Quantity RDPI.468313.028 Power Management Board:
including one Voltmeter M42301, 0-50 V, -1.5⊥
TU 25-7504.132-97 one Voltmeter Ts42300, 0-250 V, ~ 1,5⊥
TU 25-7504.133-97 one Operating hours counter SVN-2-02 one TU 25.1865.0081-87 Contactor KNE 030 24 V 3 TU 16-524.130-81 Switch switching PK16-11F5002TZ 3 TU 3428-012-03965790-98 Automatic circuit breaker AZRGK 30 A four 8U0.361.001 TU Automatic circuit breaker AZRGK 50 A four 8U0.361.001 TU Automatic switch VA-101-3 / 20
GOST R 50354-99 2 Control and Alarm Board
RDPI.468232.014 one

Device operation

The voltage from three 380 V AC power networks is supplied to the BCS, with the help of which the selection of voltage sources and the further distribution of AC voltage to consumers are performed.

BKPS is intended for visual control of AC voltage of 220 V. It also includes a light indication of the presence of voltage at the input for each phase.

The BCF is used to switch the phase sequence of the 380 V AC used for the air conditioner.

BPP is designed to supply 220 V to an uninterruptible power supply and to consumer outlets.

BKVN is intended for distribution of direct voltage across consumers.

BKVS is intended for visual control of the DC voltage of 27/24 V, as well as for controlling the operating time of the device.

BKZA is used to monitor the condition of the battery.

The voltage from one, two or three power sources of a three-phase alternating current 380 V is supplied to the input X1, X2, X3, while the source indicator lights up:

- PROM. NETWORK;

- GENERATOR 1;

- GENERATOR 2.

Using the batch switch S1, one of the three power sources is selected to power the hardware. After selecting the appropriate voltage source using the batch switch, the TC indicator lights up, then the voltage is supplied to the X5 socket, to which the BPS is connected. Through the plug X4, a voltage of 24 V from the BPZE is supplied to the control inputs of the contactors KM1, KM2 and KM3, thereby turning on the contactors and supplying the input voltage from three sources to the packet switches S2 and S3.

With the help of batch switches S2 and S3, one of three power sources is selected to power the air conditioner and external consumers. After selecting the appropriate voltage source using the batch switch, the indicator lights up:

- AIR CONDITIONING;

- VK.

The voltage from the two packet switches S2 and S3, respectively, is supplied to the sockets X6 and X7, through which the voltage is supplied to the following consumers:

- air conditioning;

- transit (to cable entry).

To ensure the normal operation of the air conditioner, a S5 toggle switch is provided. In the event that the indicator of incorrect phase rotation lights up on the air conditioner, it is necessary to switch the toggle switch S5.

A three-phase AC 380 V voltage is supplied through the X8 socket from the BPZE, which is distributed to two circuit breakers QF1 and QF2, after which the three-phase AC voltage of 380 V is distributed to a single-phase AC voltage of 220 V, phases A, B and C, respectively. When the circuit breaker QF1 is turned on, the voltage of a single-phase alternating current 220 V is supplied to uninterruptible power supplies through the X9, X10, X11 sockets, and the IBEP indicator lights up. When the QF2 circuit breaker is turned on, the voltage of a single-phase alternating current 220 V is supplied to consumer outlets through sockets X12, X13, X14, and the SOCKET indicator lights up.

Plus 27 V from rectifier devices VU-4 is supplied to terminals XT1 and XT2. The positive output of the battery, which is a 24 V DC source for short-term supply of 27 V consumers, is connected to terminal XT3. Terminal XT4 is a common 0 V point and is connected to the product ground bus.

To ensure the simultaneous operation of the rectifier devices and the battery, the device has a diode isolation based on diodes VD1, VD2, VD3 of type 2D161-200-3V.

Constant voltage from the diode isolation output is supplied to eight QF3-QF10 circuit breakers. The QF3-QF6 circuit breakers have 50 A overcurrent protection, the QF7-QF10 circuit breakers have 30 A.

Through the circuit breakers QF3-QF10, constant voltage is supplied to the sockets X15-X22, respectively. When each circuit breaker is turned on, the corresponding indicator of the presence of a constant voltage LINE 1 - LINE 8 lights up, indicating the presence of voltage on the corresponding socket X15-X22.

Operation of the control and alarm board

The battery monitoring and signaling board is designed to signal emergency operating conditions and the state of the battery (battery).

Alarm Modes:

- battery shutdown (light and sound);

- battery discharge (light);

- work from the battery (light and sound

The battery is considered discharged with a voltage reduction of 10%, which is 21.6 V.

Monitoring and signaling is as follows.

The voltage from the battery is supplied to the “+ Battery” input, from where it is supplied through the voltage divider to the inverted inputs of the comparators DA2 and DA3.

The comparator DA2 monitors the decrease in battery voltage when it is discharged, for which a reference voltage is supplied to its non-inverse input via the R7-R10 divider.

A tuned resistor R8 allows you to adjust the threshold of the comparator DA2. When the battery discharge is lower than 22 V, DA2 switches to the state of a logical unit, which in turn leads to the LED HL9 being lit up (the battery is discharged).

The comparator DA3 detects the presence of voltage from the battery, for which a reference voltage corresponding to a level of about 3 V is applied to its non-inverse input. If the battery is not connected to the inputs “+ ВУ1” and / or “+ ВУ2”, the DA3 comparator switches to the state of the logical unit, which will cause the HL10 LED to light up (the battery is off) and the multivibrator of the audio alarm to start on the DDI chip.

The absence of voltage at the inputs "+ VU1" and "+ VU2" is recorded by the comparator DA4. This mode corresponds to the operation from the battery and is signaled by the light-emitting diode HL11 and the start of the multivibrator sound alarm.

Sound alarm is implemented using two multivibrators on a DDI chip and a Darlington pair on VT1, VT2, which matches the output of the multivibrator with the BF1 capsule.

The circuit is powered from +27 V (inputs XT1 and XT2) and from +24 V (input XT3) through a diode isolation VD1-VD4 and is stabilized by a DA1 (+5 V) microcircuit.

Industrial applicability

This technical solution is industrially feasible, has wider functional capabilities, is developed at the modern technical level, has good reliability characteristics, acceptable weight and dimensions for use in a portable version.

Claims (7)

1. The power control panel, designed to control the distribution of AC and DC electricity among consumers, to monitor the condition of batteries, to protect power sources from overcurrent, to control supply voltage levels and containing a network switching unit (BCS), four inputs which are connected to the 24 V output of an external power supply and protection unit (BPZE) 24 V with an industrial network and the outputs of Generator 1 and Generator 2, and the first two outputs, respectively, with BPZE house and Transit exit, primary network control unit (BCPS), the input of which is connected to the first output of the BCS, phase sequence unit (BCF), whose input is connected to the third output of the BCS, and the output to connect the Air conditioning input, the consumer connection unit (BPP) the input of which is connected to the output 380/220 V BPZE, and two outputs are connected respectively with the outputs to uninterruptible power supplies (UPS) and sockets, characterized in that the power control panel further comprises a secondary voltage switching unit (BKVN), tr the inputs of which are connected respectively to the outputs of the rectifying devices (VU1) and (VU2) and the battery, and eight outputs with eight LINE 1 - LINE 8, the secondary network control unit (BKVS) and the battery charge control unit (BKZA), the inputs of which are connected respectively to the ninth and tenth outputs of the secondary voltage switching unit (BKVN). 2. The power control panel according to claim 1, characterized in that the network switching unit contains three three-phase voltage switching paths, each of which consists of a switch, a contactor and an indicator element, the contactor windings are connected to the 24 V power supply input and the contactors inputs are connected respectively with the contacts of the switches, the technical means “TS”, “CONDITIONER” and the computing complex “VK”, the inputs of the switch “TS” are connected to the outputs of the BKPS, and the switches “CONDITIONER” and “VK” are connected respectively to the output amps BChF (Air conditioning) and BChF (VK), indicator elements, consisting of a series-connected indicator lamp and a resistor, are connected respectively to the output contacts of the switch "TC": "PROM. NETWORK ”,“ GENERATOR 1 ”and“ GENERATOR 2 ”. 3. The power control panel according to claim 1, characterized in that the primary network control unit (BKPS) contains a “Input voltage control” voltmeter with parallel-connected measurement sockets connected through a switch to the BCS, indicator elements consisting of an indicator lamp and a resistor, connected to the three phases A, B, C, and the indicator element "TC" connected to phase A. 4. The power control panel according to claim 1, characterized in that the phase sequence unit (BCF) comprises a “Phase sequence” switch, switched to two positions A, B, C and B, A, C, and two indicator elements, consisting of indicator lamp and resistor connected to phase A of the supply voltage of “CONDITIONER” and one of the phases of the supply voltage “VK” from BCS. 5. The power control panel according to claim 1, characterized in that the consumer connection unit (BPP) contains two circuit breakers "IBEP" and "Sockets", switching respectively the power supply to uninterruptible power supplies "IBEP" and "Sockets", indicator elements “IBEP” and “Sockets” connected to the output of one of the phases of the corresponding circuit breaker. 6. The power control panel according to claim 1, characterized in that the secondary voltage switching unit (BKVN) with the secondary network control unit (BKVS) and the battery charging control unit (BZA) contains a control and signaling board connected to the inputs + VU1 , “+ VU2” and the battery “+ AKB” and the grounding bus “-ShZ”, and three diodes through which linear paths, circuit breakers are connected to these inputs of VU1, VU2 and AKB, respectively connected to the outputs of the “LINE 1 - LINE 8 ", indicator elements, consisting of in series with indicator and resistor and connected to respectively the outputs of the circuit breakers, a voltmeter, DC voltage control with parallel-connected measurement sockets connected to the SHZ input and a common circuit of circuit breakers, operating hours counter "RUNNING HOURS" connected in parallel with the voltmeter, indicator lamps “Battery is discharged”, “Battery OFF” and “Operation from battery” connected to the corresponding outputs of the control and alarm board, electromagnetic capsule connected to the corresponding contacts of the board control and signaling. 7. The power control panel according to claim 1, characterized in that the monitoring and signaling board (PCB) of the secondary voltage switching unit (BKVN) contains a voltage stabilizer, the input of which is connected through the diode to the “+ Battery" input, three battery condition monitoring paths, each consisting of a comparator, at the inputs of which signal levels + battery from the battery are supplied, and to the other inputs - signals of a given level from the resistor rheostat circuit, the inverter chain connected respectively to the outputs "Battery is discharged", "Battery is disconnected" and "Slave that of the battery ", a chain of inverters and transistor output stage coupled to the output for connection BF1 capsule differential electromagnetic (light and sound alarm).

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