Over voltage protection device UZM-50M, UZM-51M (multifunction protection device), load 63A

Реле контроля напряжения УЗМ-50М               Устройство защиты УЗМ-51М
UZM-50M UHL4
по запросу

UZM-51M UHL4
по запросу

UZM-50M UHL2
по запросу

UZM-51M UHL2
по запросу

 

Video of the UZM-50M at breakage zero

 
  • Maximum switching current is 63A/250V (14kW)
  • Single-phase over/under voltage protector
  • Protection of single-phase loads from surges, prolonged over-voltage and voltage dips resulting from accidents on the line (broken zero overlaps wires, etc.)
  • Built-in varistor protection from impulse disturbances mains voltage (switching noise, remote lightning, etc.)
  • Discrete adjustment of thresholds
  • Maintains an operating capability in a wide range of a supply voltage - 0... 440V
  • Recommended threshold for UZM-51M (170 ... 265V)
 
PURPOSE OF THE DEVICE
 The protection multifunction device UZM (further - the device) is used to disable the equipment at decreasing and increasing the mains voltage in single-phase networks, the protection of the equipment connected to it (in the apartment, office and so on.) from the damaging effects of pulsed power surges caused by the actuation of closely spaced and connected to the same electric network, magnetic starters or electromagnets, thereby preventing equipment damage and possible fire, followed by fire.
 
   DESIGN OF THE DEVICE
 The device represents a voltage control relays with a powerful electromagnetic relay output, supplemented by the varistor protection. The device is installed on a DIN rail wiidth 35 mm (GOST R IEC 60715-2003) with a front connecting wires of power switched circuits. Terminals of the tunnel construction provides a robust clip wires to the total cross section of 35mm2. The front panel has two indicator UZM - two-color (green/red) "norm-accident" and yellow for on the contact relay, the button "TEST" is for manual control. UZM-51M has an additional adjustment knob of the upper and lower thresholds off.
 
OPERATION OF THE DEVICE
 Can be used in any network configuration: TN-C, TN-S, TN-C-S, TT. Do not replace other protection devices (circuit breakers, surge arresters, RCDs, etc..). UZM does not disconnect the load and the delay does not occur, if the short-term (less than 0,5s) failures of the mains voltage, for user convenience.
 After energisation the device stands ready for 5 seconds and the display does not work, then the green LED starts flashing pointing at counting on-time exposure. If the voltage is within acceptable limits, the load is connected to the power supply network and illuminates green and yellow LEDs. Perhaps the accelerated turn on of the load manually by pressing the "TEST" button. The relay is turn on automattically and restoring the mains voltage to normal after 10 seconds, after an emergency shutdown.
 When you try to manually activate the emergency mode, the device does not allow to turn on the power to the load.
 In operating mode, the device monitors the mains voltage. When the network has high-voltage pulses, built-in varistor shunts them to the value of safe equipment.
 
Two-color display operates in various modes:
  • If the voltage is approache to the upper threshold of the shutdown starts flashing red LED and output voltage of range, disconnects the load from the network, and the yellow light turns off and the red steady on. When a voltage is return in a normal value, starts counting exposure reclosing time while the green LED starts flashing (if during the reference time will exit voltage beyond the permissible limits, the re-inclusion is reset) after the reference time, the load is connected to the power supply network.
  • If the voltage approaches to the lower threshold of th shutdown stats flashing green LED and at output of voltage beyond the permissible limits begins counting off delay time, and the red LED light starts to flash, after the reference time comes load is disconnected from the network, and the yellow LED turns off and the red lights up every 2 seconds. When a voltage is return in a normal value, starts counting exposure reclosing time while the green LED starts flashing (if during the reference time will exit voltage beyond the permissible limits, the re-inclusion is reset) after the reference time, the load is connected to the power supply network.
  • If forced to disconnect the load from the mains by pressing the "TEST" button, dual color LED indicates this alternate indication that the red and green LEDs will turn on. Pressing the "TEST" button again will return the device to normal operation.
 
 WARNING: If disabled the load by used button "TEST" the device remains off just after disconnecting and re- power is turned on . To turn on the device press the "TEST" button again (hold for 2 seconds).
 
 The user can independently change the start delay time (10s or 6min) for this:
  1.  By pressing the button "TEST" user turns off the internal relay.
  2.  Then press and hold the "TEST" (LED "norm-alarm" goes off) until the light begins flashing. If the light flashes green while t1 is set to 10 seconds when the red time t1 is 6 minutes.
  3.  Let go off button "TEST".
  4.  Press the "TEST" again to return to normal operation and switch relay.
 
 WARNING: Only the phase wire breaks at operation of device. Zero wire passes on through for ease of installation and not switched. You can connect the output N from only one side (for example when connecting to a three-phase network can combine the three UZM zero findings on one side).
 
Table recommended cross section that can be connected
Curent, A
8
10
13
16
20
25
32
40
50
63
kW
230V
1,8
2,3
3,0
3,7
4,6
5,8
7,4
9,2
11,5
14,5
mm2
copper
1,0
1,0
1,0
2,0
2,5
4,0
6,0
10,0
10,0
16,0
 
aluminium
2,5
2,5
2,5
2,5
4,0
6,0
10,0
16,0
16,0
25,0
 
SPECIFICATION OF THE UZM-50M & UZM-51M
A parameter
Unit
UZM-50M
UZM-51M
Protection parameter
Level of the voltage limit at the interferecne current 100А, not exceeds
kW
1,2
The maximum absorption energy (single pulse of 10/1000 microseconds)
J.
200
The maximum absorption current single pulse 8/20/repeating pulses 8/20 microseconds
A
8000/6000
Actuaction time of protection from pulse action
ns
<25
Threshold of load disconnection at increase voltage, Utop
V
265
240, 250, 255, 260, 265, 270, 275, 280, 285, 290
The upper threshold of accelerated load disconnection when the voltage is above the upper critical threshold, Utop.critical
V
300 ± 15
300 ± 15
Threshold of load disconnection at decrease voltage, Ulow
V
170
210, 190, 175, 160, 150, 140, 130, 120, 110, 100
The lower threshold of accelerated load disconnection when the voltage is below the lower critical threshold, Ulow.critical
В
130 ± 10
80± 10
Hysteresis of return the upper and lower threshold of the established value
%
3
Power supply
Rated supply voltage
V
230
Frequency of supply voltage
Hz
50
Maximum supply voltage
V
440
Power consumption
VA
1,5
Consumption of electricity
W*h
1,5
Switching capacity of contacts
Rated load current (at the section of connected conductors not less than 16mm², copper)
A
63
Rated power of load (AC250V)
kW
14,5
The maximum load current (active - AC1, 30min)
A
80
The maximum load capacity (AC250V - AC1, 30min)
kW
20,0
The maximum allowable short-circuit current
A
4500
Technical data
Delay on/reclosing, user selectable
 
6min/10s
The delay of accelerated off the upper critical threshold
ms
20
The delay of accelerated off the low critical threshold
ms
100
The delay off when the voltage is above the upper threshold
s
0,2
The delay off when the voltage is below the lower threshold
s
10
Cross-sectional wiring of not less than
mm²
0,5-25 (20-4 AWG)
Operating temperature range (different versions)
0C
-25…+55 (UHL4)
-40…+55 (UHL2)
Storage temperature 0C -40...+70
Immunity to interference from bursts in accordance with GOST R 51317.4.4-99 (IEC/EN 61000-4-4)    level 3 (2kV/5kHz)
Immunity to interference over voltage in accordance with GOST R 51317.4.5-99 (IEC/EN 61000-4-5)   level 3 (2kV A1-A2)
Climatic modification and placement category by GOST 15150-69 (non-condensing)   UHL4 или UHL2
The degree's protection at case/terminals according to by GOST 14254-96   IP40/IP0
The degree of pollution in accordance with GOST 9920-89   2
Relative humidity of air % up to 80 (at 25°C)
Height above sea level m till 2000
Operating position in space   artbitrary
Mode   round the clock
Dimensions mm 83х35х67
Weight, not more
kg
0,16
Service life, not less than
years
10
 
DIAGRAM OF WORK DEVICE
Диаграмма работы УЗМ-51М и УЗМ-50М
 
CIRCUITS CONNECTION OF DEVICE
Схема подключения УЗМ-51М, УЗМ-50М   Схема подключения УЗМ-51М, УЗМ-50М (1)
 
DIMENSIONS OF THE DEVICE
 Габариты 35*83*62 УЗМ-50, УЗМ-51

 

Title
Order code
File to download
(manual)
File date
UZM-50M UHL4
4640016931934
v28.04.2016
UZM-51M UHL4
4640016931958
UZM-50M UHL2
4640016931927
UZM-51M UHL2
4640016931941

 

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