Basler Electric BE1-700 - Manual (Page 91)

Figure 4-30. Voltage Protection Screen, 47 Tab
Table 4-22 summarizes operating settings for Negative-Sequence Overvoltage Protection.
Table 4-22. Operating Settings for Negative-Sequence Overvoltage Protection
Setting Range Increment Unit of Measure Default
Pickup
0 = Disabled
10 to 300
0.1 for 0 to 99.9
1.0 for 100 to 300
Secondary Volts 0
Time Delay
50 to 999 milliseconds 1 Milliseconds
50 ms
1 to 600 seconds
0.1 for 0.1 to 9.9 Seconds
1.0 for 10 to 600 Seconds
3 to 36,000 cycles (60 Hz)
∗
Cycles
2.5 to 30,000 cycles (50 Hz)
∗ Time delays less than 10 cycles can be entered to the nearest 0.1 cycles from the front panel HMI. All
time delays can be entered to the nearest 0.01 cycles from the ASCII command interface. Time delays
entered in cycles are converted to milliseconds or seconds. Increment precision after conversion is limited
to that appropriate for each of those units of measure.
Retrieving Negative-Sequence Overvoltage Protection Status from the Relay
The status of each logic variable can be determined through the ASCII command interface using the RG-
STAT (report general-status) command. See Section 6, Reporting and Alarm Functions, General Status
Reporting, for more information. The status can also be determined using BESTCOMS Metering screen.
FREQUENCY PROTECTION (BE1-700V)
81 - Over/Under Frequency Protection
BE1-700 frequency protection consists of six independent elements that can be programmed for
underfrequency or overfrequency protection. Under and over frequency protection can be used for load
shedding or islanding detection such as when a source of distributed generation (DG) is suddenly
separated or islanded from the electric utility. For this condition, frequency will quickly change from 60 Hz
9376700990 Rev M BE1-700 Protection and Control 4-35