crescent electricals

Kalbadevi, Mumbai, Maharashtra

These relays are useful for protection of 3-phase AC induction motors against various hazards. With their unique advantages they eliminate use of a thermal/bimetal relay for motor protection. Being current sensing, they are to be selected according to motor rating and are available for practically all ranges of motors. These relays are ideally suitable for Air-conditioning Compressor motor protection, as also for motors in machines, conveyors, cranes/hoists and lifts, and for pumps.

• Fixed/adjustable under/Over trip settings for parameters.
• Fixed/adjustable trip delays and Power On delays
• Built-in or external power supply
• Resetting Auto or Manual
• Output contacts : 1 CO or 2 CO
• Choice of enclosures (DIN-Rail, Plug-in)
• Models with Micro-Controller based design
• Serial Communication (RS485) port
• 2 line alpha-numeric LCD display
• Use of SMD Technology
• User-friendly LED indications

These relays are suitable for monitoring incoming 3-phase supply from Mains (Electricity distribution line). Being independent of load, they can be used for any HP/KW rating of load.

• Fixed/adjustable unbalance settings
• Fixed/adjustable undervoltage/over-voltage settings
• Fixed/adjustable trip delays
• Built-in or external power supply
• Resetting Auto or Manual
• Output contacts : 1 CO or 2 CO
• Choice of enclosures (DIN-Rail, Plug-in)
• Models with Micro-Controller based design
• Use of SMD Technology
• User-friendly LED indications

• Phase Failure [Phase Loss/Single Phasing],
• Phase sequence reversal,
• Voltage Unbalance,
• Under Voltage,
• Over Voltage

• Product Family Name
• Model Name
• System Supply Voltage & Frequency
• Aux. Supply / Control Supply Voltage

These relays are best suitable for monitoring balanced or unbalanced supplies, either of single phase, 3-phase 3-wire or 3-phase 4 wire loads powered by generators, UPS, stabilizers, inverters, or Mains (by Electricity Boards / Utilities); in AMF panels, PCCs, distribution boards and for power monitoring of individual loads / motors / pumps.

• Fixed/adjustable under/Over trip settings for parameters.
• Fixed/adjustable trip delays and Power On delays
• Built-in or external power supply
• Resetting Auto or Manual
• Output contacts : 1 CO or 2 CO
• Choice of enclosures (DIN-Rail, Plug-in)
• Models with Micro-Controller based design
• 2 line alpha-numeric LCD display (for F3 VSR1/2)
• Serial Communication (RS232) port (for F3 VSR1/2 models)
• Use of SMD Technology
• Userfriendly LED indications

• Under/over Voltage
• Under/Over Current
• Under/Over Frequency
• Reverse Power
• Earth Fault/Ground Fault
• Earth leakage

• Product Family Name
• Model Name
• System Supply Voltage & Frequency
• Aux. Supply / Control Supply Voltage
• Current input (1A or 5A)

• Primary & Secondary Current.
• Inner Diameter.
• Outer Diameter.
• Minilec Relay Model Name.

The NIPPEN ELR(Earth Leakage Relay) model has a high performance microcontroller based 3 digit, 7 segments bright LED display. NIPPEN'S ELR detects leakage current well before it crosses threshold limits and isolates the supply instantly with help of a MCCB/ACB/OCB/Contactor.

• Digital display in both DIN RAIL (ELR DIN35) and Panel Models (ELR 96)
• Monitors true RMS earth fault currents
• Bar Graph to indicate leakage current as a percentage
• Test and Reset function
• CBCT open circuit detection