Littelfuse 777 Accupower Power Monitor

Littelfuse 3-Phase Current & Voltage Monitor 777-Accupower

from Flow Factor

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The Littelfuse 777-AccuPower is a fully-programmable 3-phase motor and pump protection relay. It allows motor hp rating, full load amps, efficiency and power factor to be entered and will accurately calculate motor output power. This is most useful with mag-drive pumps or process applications where the process power is desired over the utility power. Voltage, current and power measurements can be displayed as well as fault information and setpoints. The built-in display simplifies troubleshooting and allows the user to easily and precisely configure setpoints. The Littelfuse 777-AccuPower can be used with the optional COM 4-20 output module to give an analog signal proportional to output shaft power, the RS485MS-2W (for limited Modbus capabilities, and for use with the RM1000/RM2000) remote displays listed in the 777 accessories section.

Features & Benefits:

Motor output power measurement 

Allows use of process power over utility power 

 

3 programmable restart delay timers 

Program separate restart delay time for rapid cycle protection, motor cool down, and dry-well recovery 

 

Built-in Display 

Visual indication for programming, viewing real-time voltage or current, and last fault code 

 

Remote display compatibility 

Increases safety through remote display of run-hour meter, last four fault codes, without the need to open the cabinet. Aids with arc flash safety regulations

 

Network communications capability

Limited Modbus capabilities using RS485MS-2W communication module

 

Littelfuse 777-Accupower 3-Phase motor and pump monitor

 

 

 

 

 

 

 

 

 

Specifications:

Input Characteristics 

Line Voltage 200- 4 80VAC

Frequency50/60Hz 

Motor Full Load Amp Range 2-800A (external CTs required over 90A) 

Functional Characteristics 

TC- Overcurrent Trip Class 5, 10, 15, 20, 30(J prefix enables jam protection feature)

 Output Characteristics 

Output Contact Rating (SPDT - Form C) 

Pilot duty 4 80VA @ 24 0VAC

General Purpose10A @ 240VAC

General Characteristics 

Ambient Temperature Range 

Operating-40° to 70°C (-40° to 158°F)Storage -40° to 80°C (-40° to 176°F) 

Accuracy  --  Measured Horsepower/ Kilowatt 

Typical    ± 3 %* * 

Voltage    ±1% 

Current   ±3%

(<100 amps direct)

GF Current   ±15% Timing   5% ±1 second 

Repeatability 

Voltage  ±0.5% of nominal voltage 

Current  ±1% (<100 amps direct) 

Maximum Input Power   10 W 

Pollution Degree    3 

Class of Protection   IP20, NEMA 1 (finger safe)

Relative Humidity    10-95%, non-condensing per IEC 68-2-3 

Terminal Torque    7 in.-lbs

Standards Passed

 

Electrostatic Discharge:  (ESD):   IEC 61000-4-2, Level 3, 6kV contact, 8kV air 

Radio Frequency Immunity (RFI), Conducted:    IEC 61000-4-6, Level 3 10V/m 

Radio Frequency Immunity (RFI), Radiated:    IEC 61000-4-3, Level 310V/m 

Fast Transient Burst:   IEC 61000-4-4, Level 3, 3.5 kV input power 

Short Circuit Rating:     100k A 

 

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 min.) 

Vibration:   IEC 68-2-6, 10-55Hz, 1mm peak-to-peak, 2 hrs, 3 axis 

Shock:   IEC 68-2-27, 30g, 3 axis, 11ms duration, half-sine pulse 

 

Safety Marks 

 

UL:     UL508, UL1053

CE:     IEC 60947-1, IEC 60947-5-1 

CSA:    C22.2

Max. Conductor Size through 777:   0.65” with insulation 

Dimensions :   H 77.47 mm (3.05”); W 97.79 mm (3.85”); D 128.27 mm (5.05”)  

Weight:    1.3 lbs. (20.8 oz., 589.67 g) 

Mounting Method:   Surface mount (4 - #8 screws) or DIN rail mount 

 

**On a well balanced system within recommended current range.

 

 

Littelfuse Model Number

777-AccuPower

 

Accessories:

Littelfuse RS485MS-2W Communication Module

(for limited Modbus capabilities)Required to enable the Modbus communications function on Model 77X-type products.

  

Littelfuse COM 4-20 Output Communication Module

This module allows communication to a PLC with an analog input and no Modbus input.

 

Littelfuse RM1000 Remote Monitor

The RM1000/777 motor management system combines unsurpassed electronic motor protection and critical, user-friendly, motor monitoring for up to 16 devices.

 

Littelfuse RM2000 Remote Monitor

The RM2000/777 motor management system combines unsurpassed electronic motor protection and critical, user-friendly, motor monitoring with event storage and real-time clock for date and time stamp.

 

Request a Quote HERE!

 

Flow Factor

216-765-4231

www.flowfactor.com

 

Littelfuse 777-Accupower...Littelfuse 777-Accupower