Phase Sequence & Phase Failure Relay   Application :   This Rishabh Protector is designed to monitor the correct phase rotation or sequence of 3 phase systems L1, L2, L3. Rotating machines are particularly vulnerable to incorrect phase sequence. Three phase motors can rotate in the wrong direction, potentially leading to physical damage or the risk of injury to personnel, yet voltage and current readings may appear normal. If one phase is lost because of a blown fuse, electric motors can continue to operate (single phase) which can result in severe electrical or mechanical damage.   For permanent installation, this relay should be used to monitor the incoming supply, protecting all equipment against incorrect connection at initial installation or after maintenance work. Rotating machines that cannot tolerate reverse rotation or pose significant risk to personnel under this condition should be individually protected with this relay. The possibility of incorrect supply connection is much more likely in portable equipment or marine applications.         Specifications :   Input :   Nominal Voltage 100, 110, 120, 220, 230, 240, 380,400 or 415 & 440V (57 to 480V) System Frequency 50, 60, or 400Hz (specify) Burden 3VA Overload 1.2 x continuously 1.5 x for 10 x 10seconds to BS6253 Symmetric Under : Voltage Protection Preset at 85% of nominal Weight Approximately 0.4kg Output Relay : Type D.P. Changeover Rating A.C 240V,5A non-inductive   D.C View chart Operations 0.2 million at the above loads Reset Automatic       LEDS: Indicate condition of relay, i.e illuminated when relays de-energise. Relays will be energized when the voltage/frequency is within the set point. Relays de-energise on trip point when the voltage/frequency goes over or under the set point excluding the time delay period.         - Protector Trip Relays   - Motor Protection Relay   - Earth Fault Relay   - A.C. Current Relay   - A.C. Voltage Relay with adjustable differential   - A.C. Voltage Relay with adjustable time delay   - Frequency Relay   - Combined Under / Over Voltage & Under / Over Frequency Relay   - Phase Sequence & Phase Failure Relay   - Phase Balance Relay   - Reverse Power (Current) Relay   - Synchro-Check Relay(Paralleling)   - D.C. Voltage Relay   - Thermistor Trip Relay   - Hot Spot 3 Relay   - Hot Spot 6 Relay   - Millivolt / Thermocouple Relay   - Transducer Trip   - Speed Sensing Trip Relay