Protection Relays Motor and Pump Protection - Single-Phase Motor Protection 777 / 77C SERIES Single-Phase Current & Voltage Monitor Description The 777/ 77C is a fully programmable electronic overload relay designed to protect any motor drawing 2-800 full load amps (external CTs are required above 90 amps). Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. All of the overload relays provide unsurpassed protection by combining overload, underload, and voltage in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information and displaying diagnostic codes to aid Wiring Diagram in troubleshooting a fault condition. The units also feature a TYPICAL WIRING DIAGRAM FOR MODEL 77C WITH MOTOR CONTROL communications port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety. Features & Benefits FEATURES BENEFITS Visual indication for programming, viewing real-time Built-in display voltage or current, and last fault code Programmable voltage Allows usage on wide range of systems and current settings 3 selectable Choose from automatic, semi-automatic, or manual to restart options best meet individual application needs 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 TYPICAL WIRING DIAGRAM FOR MODEL 77C WITH EXTERNAL CT remote reset kit LITTELFUSE RECOMMENDS USING CTs THAT HAVE TERMINALS Network TO AID CONVENIENCE WHEN INSTALLING CTs. Compatible with Modbus, DeviceNet, Profibus, or communications Ethernet using optional communications module capability Ordering Information MOTOR FULL MODEL LINE VOLTAGE DESCRIPTION A B C AMP RANGE 2-800A (external Provides 480VA 240VAC 77C 100-240VAC CTs required output SPDT relay contacts above 90A) Provides 480VA 240VAC 77C-LR 100-240VAC 1-9A only output SPDT relay contacts Provides 470VA 600VAC 2-800A (external 777- output SPDT relay contacts. 340-480VAC CTs required HVR-SP For systems with no control above 90A) NOTE: PHASES A & C ARE INACTIVE. USE PHASE B FOR ALL ACTIVE power transformer CURRENT MEASUREMENTS. CT SECONDARY MUST MAKE FIVE PASSES THROUGH THE PHASE B CONDUCTOR WINDOW. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062816 www.littelfuse.com/777-77cProtection Relays Motor and Pump Protection - Single-Phase Motor Protection 777 / 77C SERIES Accessories Specifications Frequency 50/60Hz RS485MS-2W Communication Module Functional Characteristics (for limited Modbus capabilities) Required to TC- Overcurrent Trip Class enable the Modbus communications function on (77C, 777 non-Plus Model 77X-type products. Series units) 5, 10, 15, 20, 30 (J prefix enables jam protection feature) Communication Adapters Output Characteristics RS485-RS232Converter with cable & plug Output Contact Rating RS485-USBConverter with cable & plug (SPDT - Form C) RS232-USBConverter Pilot duty rating 480VA 240VAC, B300 Specifications match industry standard. General purpose 10A 240VAC RM1000 Remote Monitor Pilot duty rating for The RM1000/777 motor management system HVR models 470VA 600VAC, B600 combines unsurpassed electronic motor General Characteristics protection and critical, user-friendly, motor Ambient Temperature Range monitoring for up to 16 devices. Operating -20 to 70C (-4 to 158F) RM2000 Remote Monitor Storage -40 to 80C (-40 to 176F) The RM2000/777 motor management system Accuracy combines unsurpassed electronic motor Voltage 1% protection and critical, user-friendly, motor Current 3%(<100 amps direct) monitoring with event storage and real-time GF Current 15% clock for date and time stamp. Timing (77C, 777 non-Plus Series units) 5% +1 second Solutions Software: Solutions-M Repeatability Software features include data logging, real-time Voltage 0.5% of nominal voltage data monitoring and fault and event monitoring. Current 1% (<100 amps direct) Maximum Input Power 10 W 777-MRSW Manual Remote Reset Kit Pollution Degree 3 Allows the 777 line of MotorSaver and Class of Protection IP20 PumpSaver products to be manually reset Relative Humidity 10-95%, non-condensing per IEC 68-2-3 Terminal Torque 7 in.-lbs. without opening the panel door. Standards Passed OL-RESET Manual Remote Reset Kit Electrostatic Discharge (ESD) IEC 61000-4-2, Level 3, 6kV contact, 8kV air Allows the 777 line of MotorSaver and Radio Frequency Immunity PumpSaver products to be manually reset (RFI), Conducted IEC 61000-4-6, Level 3 10V/m without opening the panel door. Radio Frequency Immunity (RFI), Radiated IEC 61000-4-3, Level 3 10V/m Fast Transient Burst IEC 61000-4-4, Level 3, 3.5kV input power Short Circuit 100kA Surge IEC 61000-4-5, Level 3, 2kV line-to-line Level 4, 4kV line-to-ground ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a level of 6kV line-to-line Hi-potential Test Meets UL508 (2 x rated V +1000V for 1 minute) Vibration IEC 68-2-6, 10-55Hz, 1mm peak-to-peak, 2 hours, 3 axis Shock IEC 68-2-27, 30g, 3 axis, 11ms duration, half-sine pulse Safety Marks UL UL508, UL1053 (File E68520) CE IEC 60947-1, IEC 60947-5-1 CSA C22.2 Maximum Conductor Size (with insulation) through 777/77C 0.65 Dimensions H 77.47 mm (3.05) W 97.79 mm (3.85) D 128.27 mm (5.05) Weight 1.56 lbs. (24.96 oz., 707.6 g) Mounting Method Surface mount (4 - 8 screws) or DIN rail mount 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062816 www.littelfuse.com/777-77c