9365200990 Rev F
BE1-CDS240 Testing and Maintenance
13-65
Step 10: (Optional.) Repeat Steps 2 through 9 for Setting Group 1.
Step 11: Using Table 13-60 as a guide, transmit the setting commands to the relay.
Table 13-60. Alarm, Integrating Time, and Definite Time Pickup Settings (Step 11)
Command Purpose
SA-24=0,0.0
Set 24 Alarm at 0 and time delay = 0.
S0-24=0.0,0.0,0.0,2.0
Set 24 Integrating PU at 0, Trip Time Dial = 0, Reset Time Dial = 0, time
curve exponent = 2.
S0-24D=2.36,50ms,0.0, 50ms
Set the first 24 definite pickup at 118% of nominal (2.36 V/Hz) and
definite time delay at minimum. Set second pickup at 0 and time delay
at minimum.
Step 12: Repeat Steps 2 through 10 for the first definite time pickup
Step 13: Using Table 13-60 as a guide, set first definite time setting to 0 and second to 2.36 V/Hz.
Step 14: Repeat Steps 2 through 10 for the second definite time delay.
Overexcitation, Volts/Hertz Integrating Trip Time Verification
The following test uses the (M-1)^2 time curve.
Step 1:
Using Table 13-61 as a guide, transmit the setting commands to the relay.
Table 13-61. V/Hz Trip Time Settings
Settings
Purpose
S0-24=2.1,0.5,0.0,2.0
Sets integrating 24 PU at 1.05% of nominal (2.10 V/Hz), Trip Time Dial =
0.5, Reset Time Dial = 0, time curve exponent = 2.
Step 2: Connect a 120 Vac, three-phase, 50 or 60-hertz voltage source (depending on user’s nominal
frequency) to Terminals B9 (A-phase), B10 (B-phase), B11 (C-phase), and B12 (neutral).
Refer to Figure 13-1 for terminal locations.
Step 3: All integrating timing tests are based on % of nominal Volts/Hertz (1 PU value). Refer to
Appendix C of the BE1-CDS240 instruction manual for time curves. Apply A-phase voltage at
nominal frequency and a value of voltage that equals the V/Hz % of nominal shown in Table
13-62 for Time Dial 0.5. Measure the time between the application of voltage and the closure
of OUT1. Verify that the relay operates 5% of the values shown in Table 13-62.
Table 13-62. V/Hz Trip Times
Percent of Nominal V/Hz
Time Dial 0.5
Time Dial 1.0
Time Dial 2.0
110%
50 seconds
100 seconds
200 seconds
120%
12.5 seconds
25 seconds
50 seconds
140%
3.1 seconds
6.3 seconds
12.5 seconds
Step 4:
Repeat the test for Time Dial 1.0 and 2.0.
Step 5:
(Optional.) Repeat Steps 2 through 4 for the B-phase and C-phase voltage inputs.
Step 6:
(Optional.) Repeat Steps 2 through 5 for Setting Group 1.
Overexcitation, Volts/Hertz Linear Reset Time Verification
The following reset time test is an approximation. For a more precise test, use a computer driven test set
and the integration time equations found in Section 4,
Protection and Control
,
Voltage Protection, 24
Function
, or Appendix C,
Overexcitation (24) Inverse Time Curves
.
Summary of Contents for BE1-CDS240
Page 2: ......
Page 8: ...vi BE1 CDS240 Introduction 9365200990 Rev F This page intentionally left blank ...
Page 38: ...1 28 BE1 CDS240 General Information 9365200990 Rev F This page intentionally left blank ...
Page 40: ...ii BE1 CDS240 Quick Start 9365200990 Rev F This page intentionally left blank ...
Page 152: ...ii BE1 CDS240 Metering 9365200990 Rev F This page intentionally left blank ...
Page 226: ...iv BE1 CDS240 Application 9365200990 Rev F This page intentionally left blank ...
Page 286: ...ii BE1 CDS240 Security 9365200990 Rev F This page intentionally left blank ...
Page 290: ...9 4 BE1 CDS240 Security 9365200990 Rev F This page intentionally left blank ...
Page 292: ...ii BE1 CDS240 Human Machine Interface 9365200990 Rev F This page intentionally left blank ...
Page 306: ...10 14 BE1 CDS240 Human Machine Interface 9365200990 Rev F This page intentionally left blank ...
Page 308: ...ii BE1 CDS240 ASCII Command Interface 9365200990 Rev F This page intentionally left blank ...
Page 342: ...11 34 BE1 CDS240 ASCII Command Interface 9365200990 Rev F This page intentionally left blank ...
Page 349: ...Figure 12 5 Horizontal Rack Mount Front View 9365200990 Rev F BE1 CDS240 Installation 12 5 ...
Page 361: ...Figure 12 17 Typical DC Connection Diagrams 9365200990 Rev F BE1 CDS240 Installation 12 17 ...
Page 372: ...12 28 BE1 CDS240 Installation 9365200990 Rev F This page intentionally left blank ...
Page 468: ...13 92 BE1 CDS240 Testing and Maintenance 9365200990 Rev F This page intentionally left blank ...
Page 512: ...14 42 BE1 CDS240 BESTCOMS Software 9365200990 Rev F This page intentionally left blank ...
Page 544: ...ii BE1 CDS240 Terminal Communication 9365200990 Rev F This page intentionally left blank ...
Page 550: ...ii BE1 CDS240 Settings Calculations 9365200990 Rev F This page intentionally left blank ...
Page 578: ...D 28 BE1 CDS240 Settings Calculations 9365200990 Rev F This page intentionally left blank ...
Page 579: ......