Thermistor protection relay RTZ-1M in an ultra thin 13mm case!
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| RTZ-1M AC230V UHL2 | 1794.00 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.
", 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.
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.
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A parameter
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Unit
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RTZ-1M | |
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Input chain A1-A2
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Rated supply voltage
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V
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АС230
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Permissible supply voltage
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V
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АС170-270
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Power consumption, max
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VA
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2
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Measuring chain T1-T2
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|||
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The number of circuits of thermometric sensors in the measuring circuit
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pcs
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up to 6
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Function of control the short circuit
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there is
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Resistance Rload (turn off the relay)
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kOm
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3,4 ± 5%
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Resistance Rcooling (turn on the relay)
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kOm
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2,3 ± 5%
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Resistance Rshort circuit at short circuit of temperature sensors (the relay is turned off), less
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Om
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25
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Minimal resistance in the measuring circuit in the cold state
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Om
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40 ± 5%
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The maximum resistance in the measuring circuit in the cold state
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kOm
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1,5 ± 5%
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Maximum cable length for detection of short circuit
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m
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2х100 (at 0,75mm2), 2х400 (at 2,5mm2)
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The reaction time, not more
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s
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0,1
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Output chains
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Quantity and type of contacts
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1 close
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Maximum switching voltage
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V
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400
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Maximum switching power: АС250V 50Hz (АС1)/DC30V (DC1)
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VA/W
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1250/150
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Maximum switching current: AC250V 50Hz (AC1)/DC30V (DC1)
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A
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5
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Mechanical endurance, not less
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cycles
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10х106
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Electrical endurance, not less
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cycles
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100000
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Common parameters
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|||
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Operating temperature range (different versions)
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0С
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-25...+55 (UHL4)
-40...+55 (UHL2)
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Storage temperature
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0С
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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) | 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) | ||
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Climatic modification and placement category by GOST 15150-69 (non-condensing)
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UHL4 or UHL2 | ||
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The degree's protection at case/terminals according to by GOST 14254-96
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IP40/IP20 | ||
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The degree of pollution in accordance with GOST 9920-89
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2 | ||
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Mode
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round the clock
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Operating position in space
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artbitrary
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Dimensions
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mm
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13х93х62
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Weight
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kg
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0,05
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DIAGRAMS OF OPERATING THE RELAY
CIRCUIT CONNECTION
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CIRCUIT CONNECTION
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TURNING ON PTC THERMISTORS
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DIMENSIONS OF THE RELAY
| Title |
Order code
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File to download
(manual)
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File date |
| RTZ-1M AC230V UHL2 | 4640016936991 |
 Download |
v03.11.2015 |
| RTZ-1M AC230V UHL4 | 4640016936984 |
English