Home » Littelfuse 777-ACCUPOWER, 777 ACCUPOWER Series, 3-Phase Current & Voltage Monitor, 190-480VAC
Littelfuse

Littelfuse 777-ACCUPOWER, 777 ACCUPOWER Series, 3-Phase Current & Voltage Monitor, 190-480VAC

In stock
SKU: 777-ACCUPOWER
$1,334.07
Rated voltage

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The 777 AccuPower is a fully-programmable, 3-phase motor and pump protection relay. It allows for entry of motor hp rating, full-load amperes, efficiency, and power factors, and will then accurately calculate motor output power. The 777 AccuPower relay 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 777 AccuPower can be used with the optional COM 4-20 output communication module to give an analog signal proportional to output shaft power. Other optional accessories include the RS485MS-2W comms module; the RM1000 remote monitor; and the RM2000 remote monitor. See the accessories products for complete information.

Applications
• For use with mag-drive pumps or process applications where the process power is desired over the utility power

Pre-order 6-8 Weeks

Specifications

Input Characteristics  
Line Voltage 200-480 V ac
Frequency 50/60 Hz
Motor Full Load Amp Range

2-800 A (external CTs required over 90 A)

2 - 25:     3 phase (looped conductors required)
25 - 90:   3 phase (direct)
80 - 800: 3 phase (external CTs)
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                 480 VA @ 240 V ac
General Purpose     10 A @ 240 V ac
General Characteristics
Ambient Temperature Range Operating      -40 °C to 70 °C (-40 °F to 158 °F)
Storage          -40 °C to 80 °C (-40 °F 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, 6 kV contact, 8 kV air
Radio Frequency Immunity (RFI) Conducted          IEC 61000-4-6, Level 3 10 V/m
Radiated              IEC 61000-4-3, Level 3 10 V/m
Fast Transient Burst IEC 61000-4-4, Level 3, 3.5 kV input power
Short Circuit Rating 100 kA
Surge
IEC 61000-4-5 Level 3, 2 kV line-to-line; Level 4, 4 kV line-to-ground
ANSI/IEEE C62.41 Surge and Ring Wave Compliance to a level of 6 kV line-to-line
Hi-Potential Test Meets UL 508 (2 x rated V + 1000 V for 1 min.)
Vibration IEC 68-2-6, 10-55 Hz, 1 mm peak-to-peak, 2 hrs, 3 axis
Shock IEC 68-2-27, 30 g, 3 axis, 11 ms duration, half-sine pulse
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 Surface mount (4 - #8 screws) or DIN-rail mount
Certification & Compliance UL             UL 508, UL 1053
CE             IEC 60947-1, IEC 60947-5-1
CSA          C22.2