777 Series - 3-Phase Current & Voltage Monitor

777_FT

The 777-FT three-phase current and voltage monitor provides motor protection with input voltage from 200–480 V ac and motor full load ampere range as follows: 2–25 A: 3-phase (looped conductors

Show More

  • Electrical Characteristics
    • Catalog # 777_FT
    • Input Voltage (V) 200 - 480 Vac
    • Maximum Input Power 10
    • Input AC Line Frequency (Hz) 50 / 60
    • Output Form SPDT - Form C
    • Output Load Rating (VA) Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac
    • Full Load Amp Range (A) 2 - 25: 3 phase (looped conductors required); 25 - 90: 3 phase (direct); 80 - 800: 3 phase (external CTs)
    • Timing Accuracy (%) 5% ±1 s
    • Rapid Cycle Timer (s) 0; 2 - 500 s (x0.5 if TC = J100)
    • Restart Delay Range All faults: 2 - 500 m (x0.5 if TC = J00); # of Restarts: All faults except undercurrent: 0; 1; oc1; 2; oc2; 3; oc3; 4; oc4; A; ocA (Automatic); Undercurrent: 0; 1; 2; 3; 4; A (Automatic)
    • Repeat Accuracy (%) Voltage: ±0.5% of nominal voltage; Current: ±1% (<100 A direct)
    • Trip Delay Type Overcurrent: (2 - 500) x 0.158 s = (0.32 - 79 s)
    • Overvoltage Trip Voltage (%) LV setting - 528 V
    • Undervoltage Trip Voltage 170 V - HV setting
    • Voltage Unbalance Trip Point (%) 2 - 15% or 999
    • Voltage Accuracy (%) ±1%
    • Overcurrent Trip Point (20 - 100 A) … MULT of 80 - 120% of CT primary
    • Overcurrent Trip Class 5; J5; 10; J10; 15; J15; 20; J20; 30; J30; J100 (J100 = Linear)
    • Undercurrent Trip Point 0; 10 - 98 A … MULT or 40 - 100% of CT primary
    • Undercurrent Trip Delay (s) 2 - 60 s
    • Current Unbalance Trip Point (%) 2 - 25% or 999 (disabled)
    • Current Unbalance Trip Delay (s) % over setpoint / Trip time: 1% / 30s; 2% / 15s; 3% / 10s; 4% / 7.5s; 5% / 6s; 6% / 5s; 10% / 3s; 15% / 2s
    • Current Accuracy (%) ±3% (<100 A direct)
    • Ground Fault Current Trip Point (A) (3 - 20) … MULT or 10 - 30% of primary CT or OFF
    • Ground Fault Trip Delay (s) % of setpoint / Trip time: 101 - 200% / 8s ± 1s; 30s; 201 - 300% / 4s ± 1s; 301 - 400% / 3s ± 1s; 401%+ / 2s ± 1s
    • Ground Fault Accuracy (%) ±15%
    • Sensor Hole Size Max conductor size: 0.65 in (with insulation)
    • Motor Acceleration Time Operating Point (s) (0 to 500) x 0.158s = (0 to 79s)
    • Short Circuit (kA) 10
    • Surge Protection IEC: 61000-4-5 Level 3 2 kV line-to-line; Level 4 4 kV line-to-ground
    • Protection Class IP20 (finger safe)
    • Pollution Degree 3
    • CT Ratio 1 - 10; or 100 - 800 ratio
    • Address A01 - A99
    • Termination Type Torque: 7 in-lbs
    • Mounting Method Surface mount (4 - #8 screws) or DIN rail mount
    • Operating Temperature -20° to 70°C (-4° to 158°F)
    • Storage Temperature (F/C) -40° to 80°C (-40° to 176°F)
    • Humidity 10 - 95% non-condensing per IEC 68-2-3
    • Dimensions 3.05 H x 3.85 W x 5.05 D in. (77.5 x 97.8 x 128.3 mm)
    • Weight (lbs/g) 0 Kg
    • Check Stock Yes