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3 -
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Figure 2: Typical Wiring Diagram Using External CTs.
Figure 3: Looping Example Showing Three Conductors
(MULT=3 from table 1)
(No other necessary connections are shown.)
Страница 1: ...perages from 26 90 amps insert the motor conductors through the holes marked A B and C Make certain the conductor through each hole corresponds to the right motor conductor i e the A phase conductor s...
Страница 2: ...XTERNAL CTs REQUIRED SEE FIGURE 2 FOR WIRING EXTERNAL CTs 91 110 5 100 100 5 111 160 5 150 150 5 161 220 5 200 200 5 221 320 5 300 300 5 321 420 5 400 400 5 421 520 5 500 500 5 521 620 5 600 600 5 621...
Страница 3: ...3 1 05 Figure 2 Typical Wiring Diagram Using External CTs Figure 3 Looping Example Showing Three Conductors MULT 3 from table 1 No other necessary connections are shown...
Страница 4: ...efore the maximum deviation from the average is 5 3 The VUB is then 5 3 208 3 x 100 2 5 The TS setting allows the user to turn the temperature sensor trip function on or off MULT MULT multiplier setti...
Страница 5: ...ck position to the 11 o clock position ADDR settings start after the 11 o clock position RU of restarts after an undercurrent is the number of restarts after an undercurrent trip condition before the...
Страница 6: ...ntil all parameters are programmed OPERATION The relay operation of the Model 777 TS is designed to be fail safe This means when everything is within the limits programmed into the unit the relay will...
Страница 7: ...15 Specialized applications 20 Standard Trip Most NEMA rated general purpose motors will be protected by this setting 30 Slow Trip Motors with long acceleration times 10 seconds or high inertia loads...
Страница 8: ...n e g worn bearings oc should not be included in the RF setting so that a manual reset after an overload fault is required A RF 1 will give the system 1 chance to recover from an unbalance or single p...
Страница 9: ...ual line line voltage The display is also used for programming the operating parameters of the device The display also identifies what caused the unit to de energize its relay or what is keeping the u...
Страница 10: ...vides isolation signal conditioning for compatibility with Modbus RTU and RS 485 networks and provides terminals for terminating the shielded communications cable Up to 99 units can be installed on on...
Страница 11: ...meter value The incoming voltage is not within the limits programmed in the VUB HV and LV settings Adjust the DISPLAY PROGRAM switch to read the incoming line voltage values Correct the incoming power...
Страница 12: ...irect Trip Times Those not shown have user selectable trip times Ground Fault Trip Time 101 200 of Setpoint 201 300 of Setpoint 301 400 of Setpoint 401 or Greater Trip time 8 seconds 1 second 4 second...
Страница 13: ...C Undercurrent Threshold 0 10 98A MULT or 40 100 of CT Primary CUB Current Unbalance Threshold 2 25 or 999 TC Overcurrent Trip Class 5 J5 10 J10 15 J15 20 J20 30 J30 RD1 Rapid Cycle Timer 0 2 500 Seco...
Страница 14: ...button 4 Turn MODE SELECT switch to RUN The program is now locked but all settings can be viewed The unit can be unlocked by following the same steps except adjust the DISPLAY PROGRAM knob to unL in...
Страница 15: ...ng s electrical installation in order to be available to the authority having jurisdiction 9 Confirm programmed parameters and proceed with installation instructions GROUND FAULT TEST RESULTS Date Per...
Страница 16: ...16 1 05 Visit our website at www symcominc com for our complete catalog and new product listings 2880 North Plaza Drive Rapid City SD 57702 800 843 8848...
