Star Delta Relay

RT6-SD30-U

General Description

• Brand: iLEC – Vietnam
• Compact & Space-Saving Design: Features a compact structure that saves panel space and ensures an easy, hassle-free connection.
• Star-Delta Starting Control: Specifically designed to control the star-delta starting sequence of 3-phase motors.
• System Protection: Reduces starting current spikes to protect motors and the power system from electrical hazards.
• Torque Reduction: Minimizes starting torque to reduce mechanical stress on machinery and equipment.
• Operation Control: Features independent ON/OFF control to start or stop the motor easily.
• Mounting Type: Standard 35mm DIN rail mounting for quick and simple installation.
• High Reliability & Durability: Delivers stable performance, long-lasting durability, and high operational reliability.
• Advanced Circuit Protection: Protects electrical circuits by switching off during overcurrent, overvoltage, or undervoltage faults.
• Applications: Widely used to protect and control water pumps, ventilation fans, air compressors, conveyors, crushers, and other heavy machinery.

Specifications

Dimension

Usage of Device and Working Principle

• Make the connections according to the diagram.
• Max.Time (Time Steps, TS ): Adjusts the stage and display the max.time.
• [ t ]: Divides the stage by 10 and multiply with displaying value.
  * Example: Time is 75 minutes.
• Make stage button to 100m (100 minutes) and turn “t” button between 7-8. In this case time is adjusted to 75 minutes.
  * Note: In order to adjust much sensitive higher time values, set “t” by chronometer in low stages and in crease the stage to the time required.
  * Example: Time is 25 hours.
• Turn stage button to 10s (10 seconds) and “t” button between 2-3. Make power on and check with a chronometer for 2.5 seconds.
• Make the stage button 100h(100 hours). In this case, you set it more sensitive.
• After setting the time, power on the device. Device will start timing and meanwhile led switches on-off.
  When device is timing relay contact 2 shorted to 1.
  When the timing finish (set time is up) relay led is switches on stable and contact 2 shorted to 3.
  Device keeps stable till the power is off.

Typical Connection Diagram

Maintenance

• Switch off the device and release from connections.
• Clean the trunk of device with a swab.
• Don’t use any conductor or chemical might damage the device.
• Make sure device works after cleaning.

Warnings

• Please use the device according to the manual.
• Don’t use the device in wet.
• Include a switch and circuit breaker in the assembly.
• Put the switch and circuit breaker nearby the device, operator can reach easily.
• Mark the switch and circuit breaker as releasing connection for device.

External description

Resources & Support

• Technical documents: Model RT6-SD30-U
• Reference Articles:
  Star Delta Relay for Induction Motors

Review iLEC RT6-SD30-U Star Delta Relay