Kalpana Enterprises

Featuresl Super bright SMD LEDsl Master and slave units are available in 4,6 &8 windows.l Incorporates a built-in buzzer in addition tofault alarm relay output.l User-selectable sequence of operations-Manual/Auto reset/ Manual reset with ringback / FIFO.l RS485 communication output with fieldselectable device Ids.l Repeat Relay card Option available.

Additional Information:

• Delivery Time: Immediate
• Packaging Details: Cartoon Box

The multifunction numerical motor protection device provides complete protection of low voltage motors. The device has been developed keeping in view of varied customer needs and various applications of motors. Accordingly, the motor protection device incorporates the following:

• Precise estimate of the thermal image of motor for varying conditions of starting, running, overload, stopping, unbalance conditions. The negative sequence current calculations are taken into account for unbalance current conditions.
• Continuous monitoring of thermal capacity used and in case of power failure the last value of accumulated thermal capacity prior to power interruption is stored.
• Motor start lockout feature inhibiting start of the motor, in case of non-availability of sufficient thermal reserve to complete the acceleration.
• In built Insulation resistance check function prior to start of motor to give a preliminary indication of the condition of insulation, so that the user can take appropriate action for low value of insulation resistance.
• Automatic setting of parameters function, which would set all the protection parameters only on entering the rated full load current as per the motor name plate details.
• Annunciation, in case, the motor fails to stop after the protection device issues trip command.

 

The salient features of device are:

• LED Seven Segment Display, brighter pixilation and longer life than LCD
• Continuous scanning and display 3 phase currents and thermal capacity used
• Annunciation for each type of fault
• Numerical Algorithm for fast, reliable operation
• Thermal Overload curves selectable as per requirement, Excellent accuracy and long-time stability of thermal curves due to complete software-based implementation
• Customized protection CT as per load requirement supplied with the relay
• Continuous self- supervision and fail-safe operation
• Man-Machine interface through keypad
• Upto five event trip records, FIFO based (with date and time stamping in model – HLEDx)
• Reset Inhibit function, Hour Counter, Online calibration, Password facility (on demand)
• Robust mechanical design and adequate IP 54 degree of protection by enclosure which is shock proof nonmetallic screw less unit

 

The device provides protection against the following:

• Overload
• Short Circuit
• Under Current
• Unbalanced current
• Locked Rotor
• Earth Fault
• Single Phasing (Phase Loss)