ПРАЙС ЛИСТ ОТ 23.06.2025
СКАЧАТЬ
A series module of automatic input of a reserve MAVR-3 are designed to operate in four-wire nets 230/400V with insulated zeroes
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| MAVR-3-31 UHL4 | по запросу |
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The internal formation of the auxiliary power supply voltage
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Setting of threshold Umin and Umax separately for Input 1 and Input 2
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Control of availability, alternation, break of phase for Input 1 and Input 2
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Setting time of turning on and turning off
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Load capacity of control contacts - 16A/AC250V
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Alarm relay
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The ability of remote locking of buttons of front panel
APPLICATION OF MODULE AUTOMATIC INPUT OF RESERVE MAVR-3-31
The module automatic input reserve MAVR-3-31 (the module) is a control device is designed to automatically switch to reserve line at disconnected or a fault of operating line. The device is designed for operation in the cupboards (units) of control the automatic enabling a reserve power in systems uninterruptible power supply 3-phase electrical receivers of I and II category of connection according to the SAE requirements.
PURPOSE OF MODULE
The module is designed to control automatic switching load from one source of supplying to the other and back to automatic mode when the voltage of unacceptable deviations or alarm at the working input (reduction/exceeding the set threshold of voltage, changes of alternation of phases, breakages of one or more phases). A module is carried out a start-up and trouble-free stop of generator set, a control of state switching mechanisms and indication of state protection devices.
DESIGN OF MODULE
The module is designed for shield mounting. Case material - plastic ABC. Mounting is carried into the insertion hole dimensions 136*136mm. To fixing is used two brackets, supplied.
At the front panel there are mnemonic circuit, LED phase voltages "L1", "L2", "L3", indicators exceeded threshold values "<U" and ">U", indicator of ready input "READY", indicators of state switching mechanisms "OFF", "REMOTE", indicator "ALARM", indicator of automatic mode "AUTO", indicator of availability reserve supply "POWER", buttons of control switching mechanisms "INPUT1" and "INPUT2", reset button "STOP", button of turning on automatic mode "AUTO".
On the switching panel there are fuses of circuits of auxiliary power supply of each input, jacks of connection input 1 and input 2, jacks of connection switching mechanisms input 1 and input 2, jack of connection auxiliary power supply "Uauxiliary", jack of start generator "START GENERATOR", jack of connection battery "BATTERY", jack "ALARM" for connection external alarm signaling, jack "INPUTS" for connection external signaling devices, switches for setting threshold values of voltages "Umax", "Umin" for input 1 and for input 2, switches of setting delays "Timeon", "Timeoff", "Timecooling", unit of microswitches of setting operation modes "Modes".
PRINCIPLE OF OPERATION OF MODULE
The module is a ready-to-use device consisting of three independent electronic units: two units of control parameters of three-phase four-wire net (voltage control) and microprocessor unit.
The unit of voltage control of each input has LED indication of input state. Power is carried out from phase "L1" and neutral "N". Units are galvanic isolated each other and with microprocessor unit.
The microprocessor unit analyzes the readiness of main and reserve inputs, set points of switches units modes, duration state of discreate inputs, after that is carried out an issuance control signals to built-in control relay and indicators on the front panel. A control of switching mechanismsis carried out via "dry" contacts built-in relay. Power of microprocessor unit is provided by phases L1 of first and second inputs. Auxiliary supply is generated from phase L1 of first input or phase L1 of second input. In the absence of two phases, an auxiliary supply is carried out from uninterruptible power supply, power of microprocessor unit is carried out from battery.
The microprocessor unit analyzes the readiness of main and reserve inputs, set points of switches units modes, duration state of discreate inputs, after that is carried out an issuance control signals to built-in control relay and indicators on the front panel. A control of switching mechanismsis carried out via "dry" contacts built-in relay. Power of microprocessor unit is provided by phases L1 of first and second inputs. Auxiliary supply is generated from phase L1 of first input or phase L1 of second input. In the absence of two phases, an auxiliary supply is carried out from uninterruptible power supply, power of microprocessor unit is carried out from battery.
PURPOSE OF CONTROL PARTS, INDICATION AND CONNECTION
Front panel
Back panel
CONTROL MODES
Manual:
Manual input is used for direct connection of selected input via buttons on front panel "Input1" or "Input2".
In case, if is supplied a command to enable one input, when enabling other input, firstly will disabling input, then will be given a command to start the selected input. For example, its necessary to enable a second input at enabled first input. After 3 seconds after pressing button "Input2", MAVR will change a state. Disconnects the first input, then a start of generator set. Once installed on the second input normal voltage, there will connection load to the generator set.
To switch to automatic mode of control its necessary press and hold a button "Auto".
LED "Auto" is off.
Auto:
In this mode MAVR automatically controls the switching devices, startup and shutdown of the generating set.
Switching to mode of manual control is provided by pressing a button "Input1" or "Input2".
LED "Auto" is on.
Reset mode:
At pressing button "Stop" are carried out a disabling of active input, switching off a generating set, reset alarms at state and short cicuit (if it possible). MAVR goes into standby mode, flashing LED "Auto".
In this mode MAVR performs only fuctions of state indication. All relay outputs are switched off.
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A parametr
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Unit
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MAVR-3-31
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Type of controlled lines ( 3-phase, 4-wires)
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L1, L2, L3, N
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Quantity of controlled inputs
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2
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Supply voltage input1, input2
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V
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180-400
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Frequency of net
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Hz
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47-60
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Maximum switching voltage/at current
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V/A
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AC400/5*
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Maximum current of load, AC1 /at voltage
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A/V
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16/AC250*
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Thresholds of turning off Input 1, Input 2 at Umax
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V
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243, 249, 255, 261, 267, 273, 279, 285, 291, 297
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Thresholds of turning off Input 1, Input 2 at Umin
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V
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163, 169, 175, 181, 187, 193, 199, 205, 211, 217
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Delay of turning off
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s
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0,1, 0,5, 1, 2, 3, 5, 10, 20, 30, 60
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Delay of turning on
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0,1s, 1s, 3s, 15s, 30s, 1min, 2min, 3min, 6min
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| Time of cooling | 1s, 30s, 1min, 5min, 10min, 20min, 30min, 40min, 50min, 60min | |
| Time of restart generating set | min | 5 |
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Control of break phase
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there is
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Control of alternation phases
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there is
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Control of "stiking" phases
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there is
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Switching endurance
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>106
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Electrical endurance
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>104
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Operating temperature range
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0C
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-20...+55
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Storage temperature
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0C
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-40...-70
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Immunity to interference from bursts in accordance with GOST R 51317.4.4-99 (IEC/EN 61000-4-4)
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level 3 (2kV/5kHz)
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Immunity to interference over voltage in accordance with GOST R 51317.4.5-99 (IEC/EN 61000-4-5)
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level 3 (2kV L1-L2)
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Climatic modification and placement category by GOST 15150-69 (non-condensing)
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UHL4
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The degree's protection at case/terminals according to by GOST 14254-96
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IP54/IP20
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The degree of pollution in accordance with GOST 9920-89
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2
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Relative humidity of air
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%
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up to 80 (at 250C)
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Height above sea level
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m
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till 2000
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Operating position in space
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artbitrary
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Mode
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round the clock
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Dimensions
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m
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0,142х0,142х0,094
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Weight
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kg
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0,74
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* - Necessarily using protection chains against switching emissions
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DIAGRAM OF OPERATING
CIRCUITS OF OPERATING A MODULE
A load connection via automatic breakers with motor drivers
A load connection via magnetic starters
DIMENSIONS OF MODULE
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Title
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Order code
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File to download
(manual)
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File date
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MAVR-3-31 UHL4
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4640016938414
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v01.04.2016
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Download
Английский
