Thermistor protection relay RTZ-1M in an ultra thin 13mm case!

Реле тирмисторной защиты РТЗ-1М
RTZ-1M AC230V UHL2 1560.00 руб. с НДС

RTZ-1M AC230V UHL4 1300.00 руб. с НДС

 

  • Protection of motors and other equipment from overheating
  • Control of up to 6 sensors at the same time
  • 1 normally open contact
  • Control of short circuit of sensors
  • Can operate with bimetallic contacts
  • Is possible to operate with the memory of the alarm or self-healing (auto power on cooling)
  • Indication of the relay operation
  • Width of case is 13mm
 
PURPOSE OF THE RELAY
 Thermistor relay RTZ-1M is designed to protect the motors from overheating during prolonged start or stop, undervoltages, overvoltages or over-switching frequency, contamination of channels of cooling coils, etc. The relay is connected to thermoresistive sensors (PTC) or bimetallic thermocontacts built-in the motor winding.
 
DESIGN OF THE RELAY
 Relay is produced in a plastic case with a unified front connection wires power and switched circuits. Mounting is carried out on a DIN rail  width 35mm (GOST R IEC 60715-2003) or on a smooth surface. To set on a smooth surface, you need to push locks. Terminal design provides robust clamp wires up to 2,5mm2. On the front panel there are: green indicator of power on "U", yellow indicator of actuation built-in executive relay "", red indicators "Short circuit of sensors" and "Overheating" for visual analysis alarm modes of the engine. On the side panel of the case there is a switch of operating modes: 1 - PTC or thermocontact, and 2 - operation with memory and auto power while cooling.
 
OPERATION OF THE RELAY
 The relay controls alarm modes of engines, that are manned by built in temperature sensors, which are used as a PTC thermistor (PTC resistors) or bimetallic thermocontacts.
 The relay functions independently of rated motor current, the class of insulating materials and the type of start-up. Successively included sensors connected to terminals "T1" and "T2". The number of connected sensors is limited by the total resistance of separate PTC R=R1+R2...+ Rn <= 1,5 k.
 In normal engine mode the resistance of the sensors does not reach the threshold of actuation, and the built-in executive relay is turned on and the contacts 11-14 are closed. When heated even one sensor and the excess value Rload the relay is turned off and contacts 11-14 are opened, contacts 11-14 are closed.
 After cooling of sensors and achievements the value Rcooling the relay automatically turns on, closing contacts 11-14.
 Upon detection a short circuit in the sensors circuit (Rshort circuit <25Om) - relay turns off. Upon operation with thermocontacts a control of short cicuit of sensors is turned off. As sensors of temperature protection can be used posistors type CT14.2. Properties of the relay allow to use other posistor temperature sensors conforming the requirements of DIN44081 and DIN44082.
 Thermistor relay combined with PTC thermistors or thermocontacts can also be used for temperature control: - ventilators of hot air; - bearings; - oils; - air; - heating systems; - transformers.
 
SPECIFICATION OF THE RELAY RTZ-1M
A parameter
Unit
RTZ-1M
Input chain A1-A2
Rated supply voltage
V
АС230
Permissible supply voltage
V
АС170-270
Power consumption, max
VA
2
Measuring chain T1-T2
The number of circuits of thermometric sensors in the measuring circuit
pcs
up to 6
Function of control the short circuit
 
there is
Resistance Rload (turn off the relay)
kOm
3,4 ± 5%
Resistance Rcooling (turn on the relay)
kOm
2,3 ± 5%
Resistance Rshort circuit at short circuit of temperature sensors (the relay is turned off), less
Om
25
Minimal resistance in the measuring circuit in the cold state
Om
40 ± 5%
The maximum resistance in the measuring circuit in the cold state
kOm
1,5 ± 5%
Maximum cable length for detection of short circuit
m
2х100 (at 0,75mm2), 2х400 (at 2,5mm2)
The reaction time, not more
s
0,1
Output chains
Quantity and type of contacts
 
1 close
Maximum switching voltage
V
400
Maximum switching power: АС250V 50Hz (АС1)/DC30V (DC1)
VA/W
1250/150
Maximum switching current: AC250V 50Hz (AC1)/DC30V (DC1)
A
5
Mechanical endurance, not less
cycles
10х106
Electrical endurance, not less
cycles
100000
Common parameters
Operating temperature range (different versions)
0С
-25...+55 (UHL4)
-40...+55 (UHL2)
Storage temperature
0С
-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 or UHL2
The degree's protection at case/terminals according to by GOST 14254-96
  IP40/IP20
The degree of pollution in accordance with GOST 9920-89
  2
Mode
 
round the clock
Operating position in space
 
artbitrary
Dimensions
mm
13х93х62
Weight
kg
0,05
 
DIAGRAMS OF OPERATING THE RELAY
Диаграмма работы РТЗ-1М
 
 
CIRCUIT CONNECTION
 
CIRCUIT CONNECTION
Схема подключения РТЗ-1М
TURNING ON PTC THERMISTORS
Схема подключения позисторов
 
DIMENSIONS OF THE RELAY
Габариты 13*93*62
 
Title
Order code
File to download
(manual)
File date
RTZ-1M AC230V UHL2 4640016936991 Download v03.11.2015
RTZ-1M AC230V UHL4 4640016936984

 

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