Protection Relays Motor and Pump Protection - 3-Phase Pump Protection 777-KW/HP-P2 SERIES 3-Phase Current & Voltage Monitor Description The 777-KW/HP-P2 series has the overload, voltage, phase loss and reversal, voltage and current unbalance, current and power monitoring*, and underload trip based on power in one package. The underpower trip feature is desirable anytime the current vs. load characteristic is non-linear or has little change. In general terms, smaller motors and slow-speed motors have little change in current over the normal load range. Larger motors that are running light loads will also show small current changes over the operating load range. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, Wiring Diagram providing real-time operational information and displaying diagnostic codes to aid in troubleshooting a fault condition. TYPICAL WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES 23 Power is Linear, equal Current is not linear, low sensitivity at both sensitivity for low loads low and high and high sensitivity loads. for high loads. COIL CONTACTOR CONTROL POWER No Load Full Load No Load Full Load ACB The units also feature a communications port that can be used START STOP with communication modules listed in the 777 accessories M section to form a Modbus, DeviceNet**, Profibus, or Ethernet AUTO network. Up to 99 units can be remotely monitored and TO MOTOR controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. Figure 1: Typical Wiring Diagram Features & Benefits CURRENT TRANSFORMER WIRING DIAGRAM FOR 777-KW/HP-P2 SERIES FEATURES BENEFITS Low and High Increases reliability for non-linear motors where the Power Protection load characteristic has little change Visual indication for programming, viewing real-time Built-in Display voltage, current, kilowatts, or horsepower, and last fault code LITTELFUSE RECOMMENDS Programmable voltage USING CTs WITH TERMINALS Allows usage on wide range of systems and current settings TO SIMPLIFY INSTALLATION. 3 selectable Choose from automatic, semi-automatic, or manual to restart options best meet individual application needs 12 - 16 AWG STRANDED WIRE 3 programmable restart Program separate restart delay time for rapid cycle delay timers protection, motor cool down, and dry-well recovery Increases safety through remote display of real-time Remote display data and fault history, without the need to open the compatibility cabinet. Aids with arc flash safety regulations Reset can be done through pushbutton on relay or Flexible reset remotely with optional 777-MRSW or OL-RESET remote reset kit All CTs must face the same direction, and all CT secondaries must be wired identically, i.e. all X1 Network Compatible with Modbus, DeviceNet**, Profibus, or terminals enter the main (round) window and return communications Ethernet using optional communications module to H1 terminal after exiting the loop conductor capability window (rectangle). Every CT secondary must make 5 passes through the corresponding main conductor window. 2019 Littelfuse, Inc. Rev: 2-C-042619 wwwwww.littelfuse.com/777kwhpp2.littelfuse.com/ Power CurrentProtection Relays Motor and Pump Protection - 3-Phase Pump Protection 777-KW/HP-P2 SERIES Ordering Information MODEL LINE VOLTAGE MOTOR FULL AMP RANGE DESCRIPTION 200-480 V ac 2-800 A (external CTs 777-KW/HP-P2 Provides 480 VA 240 V ac output SPDT relay contacts (3-phase) required above 90 A) 200-480 V ac 1-800 A (external CTs 777-LR-KW/HP-P2 Provides 480 VA 240 V ac output SPDT relay contacts (3-phase) required above 9 A) Provides 470 VA 600 V ac output SPDT relay contacts. Required when a CPT 340-480 V ac 2-800 A (external CTs 777-HVR-KW/HP-P2 (control power transformer) is not used on a 480 V system. Commonly used in pumping (3-phase) required above 90 A) applications to save the cost and extra wiring associated with a CPT 500-600 V ac 2-800 A (external CTs Provides 480 VA 240 V ac output SPDT relay contacts. Used in Canada and NE USA 777-575-KW/HP-P2 (3-phase) required above 90 A) where 575 V utility power services are common Provides 480 VA 240 V ac output SPDT relay contacts. It is wired directly without the 200-480 V ac 0.5-21 A and 40-740 A 777-MLR-KW/HP-P2 need to loop conductors for 5-21 amps (under 5 amps requires looping of conductors), and (3-phase) with external CTs can be used with external CTs for 40-740 amps Accessories RM1000 Remote Monitor RS485MS-2W Communication Module The RM1000/777 motor management system (for limited Modbus capabilities) Required to combines unsurpassed electronic motor enable the Modbus communications function on protection and critical, user-friendly, motor Model 77X-type products. monitoring for up to 16 devices. CIO-MB/CIO-120-MB Communication Module RM2000 Remote Monitor Modbus-RTU interfaces capable of providing The RM2000/777 motor management system discrete control and monitoring of an overload combines unsurpassed electronic motor relay over a Modbus network. protection and critical, user-friendly, motor monitoring with event storage and real-time clock for date and time stamp. CIO-DN-P/CIO-120-DN-P Communication Module DeviceNet interfaces capable of providing Solutions Software: Solutions-M discrete control and monitoring of motor Software features include data logging, real-time starters, drives and other devices over a data monitoring and fault and event monitoring. DeviceNet** network. CIO-777-PR Communication Module 777-MRSW Manual Remote Reset Kit Profibus interface capable of providing discrete Allows the 777 line of MotorSaver and control and monitoring of motor starters, drives PumpSaver products to be manually reset and other devices over a Profibus network. without opening the panel door. CIO-EN (non-POE) Communication Module OL-RESET Manual Remote Reset Kit Modbus-TCP and Modbus-RTU interface capable Allows the 777 line of MotorSaver and of providing discrete control and monitoring of an PumpSaver products to be manually reset overload relay over a Modbus network. without opening the panel door. Communication Adapters RS485-RS232Converter with cable & plug RS485-USBConverter with cable & plug RS232-USBConverter Specifications match industry standard. 2019 Littelfuse, Inc. Rev: 2-C-042619 wwwwwwwww.littelfuse.com/777kwhpp2.littelfuse.com/.littelfuse.com/