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Schneider Electric's RM4TR32 three-phase network control relay ensures the stability and safety of electrical systems by monitoring voltage and phase imbalances.

RM4TR32 – three-phase network control relay RM4-T

Original price was: $444.00.Current price is: $342.00.

The RM4TR32 is a versatile three-phase network control relay from Schneider Electric designed to monitor and protect three-phase electrical systems.

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Description

Main
range of product
Harmony Relay RM4TR32.
product or component type
Industrial measurement and control relays.
relay type
Control relay.
product-specific application
For 3-phase supply.
relay name
RM4-T.
relay monitored parameters
Phase failure detection.
Phase sequence.
Overvoltage and undervoltage detection.
time delay
Adjustable 0.1…10 s.
measurement range
290…484 V.
contacts type and composition
2 C/O.
poles description
3P.
Complementary
maximum switching voltage
440 V AC.
control threshold undervoltage
300…430 V.
control threshold overvoltage
420…480 V.
output contacts
2 C/O.
setting accuracy of the switching threshold
+/-3 %.
switching threshold drift
<= 0.06 % per degree centigrade, depending. permissible ambient air temperature.
<= 0.5 % within the measuring range.
setting accuracy of time delay
10 P.
time delay drift
<= 0.07 % per degree Celsius, depending on. the rated operational temperature.
<= 0.5 % within the measuring range.
hysteresis
5 % fixed of de-energization threshold.
delay at power up
650 ms.
maximum measuring cycle
80 ms
marking
CE.
overvoltage category
III, conforming to IEC 60664-1.
[Ui] rated insulation voltage
500 V, conforming to the IEC.
supply frequency
50/60 Hz +/- 5%.
operating position
Any position without derating.
connections—terminals
Screw terminals, 2 x 1.5 mm flexible with cable end.
Screw terminals, 2 x 2.5 mm flexible without cable ends.
tightening torque
0.6…1.1 N.m.
mechanical durability
30000000 cycles.
conventional free-air thermal current
8 A.
[Ie] rated operational current
2 A at 70 °C, 24 V DC-13, conforming to IEC 60947-5-1/1991.
2 A at 70 °C, 24 V DC-13, conforming to VDE 0660.
3 A at 70 °C, 115 V AC-15, conforming to IEC. 60947-5-1/1991.
3 A at 70 °C, 115 V AC-15, conforming to VDE 0660.
3 A at 70 °C, 24 V AC-15, conforming to IEC 60947-5-1/1991.
3 A at 70 °C, 24 V AC-15, conforming to VDE 0660.
3 A at 70 °C 250 V AC-15 conforming to IEC. 60947-5-1/1991.
3 A at 70 °C 250 V AC-15 conforming to VDE. 0660.
0.1 A at 70 °C 250 V DC-13 conforming to IEC. 60947-5-1/1991.
0.1 A at 70 °C 250 V DC-13 conforming to VDE 0660.
0.3 A at 70 °C 115 V DC-13 conforming to IEC 60947-5-1/1991.
0.3 A at 70 °C 115 V DC-13 conforming to VDE 0660.
switching capacity in mA
10 mA at 12 V.
switching voltage
250 V AC.
contacts material
90/10 silver nickel contacts.
number of cables
2
height
78 mm.
width
22.5 mm.
depth
80 mm.
terminals description: ISO n°1
(15-16-18)OC.
(L1-L2-L3)CO.
(25-26-28)OC.
output relay state
Tripped, fault present.
9 mm pitches
2.5.
net weight
0.11 kg.
Environment
electromagnetic compatibility
Electrostatic discharge – test level: 6 kV level 3. (contact discharge) conforming to IEC 61000-4-2.
Electrostatic discharge – test level: 8 kV level 3 (air discharge) conforming to IEC 61000-4-2.
Resistance to electrostatic discharge – test level: 6 kV (contact) conforming to IEC 61000-4-2 level 3.
Resistance to electrostatic discharge – test level: 8. kV (air) conforming to IEC 61000-4-2 level 3.
standards
EN/IEC 60255-6.
product certifications
CSA
GL.
UL
directives
73/23/EEC – low voltage directive.
89/336/EEC – electromagnetic compatibility.
ambient air temperature for storage
-40…85 °C
ambient air temperature for operation
-20…65 °C.
relative humidity
15…85 % 3K3 conforming to IEC 60721-3-3.
vibration resistance
0.35 ms (f= 10…55 Hz) conforming to IEC 60068-2-6.
shock resistance
15 gn for 11 ms, conforming to IEC 60068-2-27.
IP degree of protection
IP20 (terminals) conforming to IEC 60529.
IP50 (casing) conforming to IEC 60529.
pollution degree
conforming to IEC 60664-1.
dielectric test voltage
2.5 kV
non-dissipating shock wave
4.8 kV
resistance to electrostatic discharge
6 kV contact conforming to IEC 61000-4-2 level 3.
8 kV air conforming to IEC 61000-4-2 level 3.
resistance to electromagnetic fields
10 V/m conforming to IEC 61000-4-3 level 3.
resistance to fast transients
2 kV, conforming to IEC 61000-4-4 level 3.
disturbance radiated/conducted
CISPR 11 group 1 – class A.
CISPR 22: Class A.

The RM4TR32 is a three-phase network control relay, part of Schneider Electric‘s RM4 series, designed to provide monitoring and control of three-phase electrical networks. This relay plays a crucial role in ensuring the stability and safety of electrical systems by monitoring the parameters of the network and signaling when these parameters fall outside preset thresholds.

Key Features

  1. Three-Phase Monitoring: The RM4TR32 is capable of monitoring all three phases of an electrical network. It detects any imbalance or failure in any of the phases, which is crucial for preventing damage to connected equipment.
  2. Adjustable Thresholds: The relay allows for the setting of adjustable thresholds for various parameters, such as voltage and phase imbalance. This customization ensures that the relay can be tailored to the specific needs of the application.
  3. Delay Settings: The RM4TR32 features adjustable time delays for tripping and resetting. This functionality prevents false alarms due to transient conditions and ensures the relay only trips when a genuine fault is detected.
  4. Compact Design: The relay is designed to be compact, facilitating easy installation in control panels where space may be limited. Despite its small size, it offers robust performance and reliability.
  5. DIN Rail Mounting: The RM4TR32 is designed for easy mounting on standard DIN rails, simplifying installation and integration into existing electrical control systems.
  6. LED Indicators: The relay is equipped with LED indicators that provide visual feedback on the status of the relay and the network parameters being monitored. This feature aids in quick diagnostics and troubleshooting.

Technical Specifications

  1. Voltage Range: The RM4TR32 operates over a wide voltage range, typically from 208 to 480 V AC. This versatility makes it suitable for a broad range of industrial and commercial applications.
  2. Frequency: It supports standard frequency ranges of 50/60 Hz, ensuring compatibility with most electrical networks worldwide.
  3. Power Consumption: The relay is designed to be energy efficient, with low power consumption, which helps in reducing the overall operational costs.
  4. Operating Temperature: It is built to operate in a wide temperature range, typically from -20°C to +60°C, ensuring reliable performance in various environmental conditions.
  5. Contact Configuration: The RM4TR32 usually comes with a changeover relay contact (SPDT), allowing for versatile control options.

Applications

  1. Industrial Automation: In industrial settings, the RM4TR32 is used to monitor and protect machinery and equipment from phase loss, phase imbalance, and other network issues that could lead to costly downtimes or damage.
  2. Commercial Buildings: For commercial applications, this relay helps ensure the stable operation of HVAC systems, elevators, and other critical electrical systems by monitoring the quality of the electrical supply.
  3. Renewable Energy Systems: In renewable energy installations, such as wind turbines and solar farms, the RM4TR32 ensures the integrity of the electrical supply, protecting inverters and other sensitive equipment from network anomalies.
  4. Power Distribution: The relay is also used in power distribution networks to monitor the quality of the electrical supply and ensure compliance with regulatory standards.

Installation and Operation

Installing the RM4TR32 is straightforward due to its DIN rail mounting capability. Proper wiring should be followed as per the manufacturer’s guidelines to ensure correct operation. The adjustable settings for voltage thresholds and time delays should be configured based on the specific application requirements.

Once installed, the relay continuously monitors the three-phase network. In the event of a fault, such as a phase loss or imbalance, the relay will trip and activate the alarm or control circuit connected to its output. The LED indicators provide a visual indication of the fault condition, aiding in quick identification and resolution.

Maintenance and Troubleshooting

The RM4TR32 is designed for minimal maintenance, but regular inspections are recommended to ensure optimal performance. Checking the tightness of electrical connections and the condition of the relay contacts periodically can help prevent issues. In the event of a malfunction, the LED indicators provide valuable diagnostic information, helping to pinpoint the cause of the issue quickly.

Conclusion

The RM4TR32 three-phase network control relay from Schneider Electric is a robust and reliable solution for monitoring and protecting three-phase electrical networks. Its adjustable settings, compact design, and versatile application make it an essential component in ensuring the stability and safety of electrical systems in various industrial, commercial, and renewable energy applications.

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