BE1-DFPR General Information
1-10
T
AD
M
N
C
BD
K
Current Pickup For Phase and Neutral
Dropout/pickup ratio: 95% or higher
Time Elements (51, 51N)
5 Ampere CT
Range
0.5 to 12 A
Increments
0.1 A
Pickup accuracy
±2% or 50 mA
1 Ampere CT
Range
0.1 to 2.4 A
Increments
0.02 A
Time Characteristic Curves
Refer to Table 1-3. Timing accuracy within 5% or 40 milli-
(FOR 51, 51N ELEMENTS)
seconds, whichever is greater for time dial settings greater
than 0.1 and multiples of 2 to 40 times pickup setting.
Eleven inverse time functions and one fixed time function
can be selected. Characteristic curves for the inverse and
definite time functions are defined by the trip and
integrating reset characteristic equations and shown
graphically in Figures 1-5 through 1-16.
Table 1-3. 51, 51N Characteristic Curves
Type
Curve Name
Figure
Number
S
Short Inverse
Figure 1-5
L
Long Inverse
Figure 1-6
D
Definite Time or IDMT
Figure 1-7
M
Moderately Inverse
Figure 1-8
I
Inverse Time
Figure 1-9
V
Very Inverse
Figure 1-10
E
Extremely Inverse
Figure 1-11
A
BS142 Standard Inverse
Figure 1-12
B
BS142 Very Inverse (It)
Figure 1-13
C
BS142 Extremely Inverse (I
2
t)
Figure 1-14
G
BS142-Longtime Inverse
Figure 1-15
F
Fixed Time
Figure 1-16
Trip Characteristic
Characteristic curves for the inverse and definite time
functions are defined by the following equation.
Where:
D = TIME DIAL setting
M = Multiple of PICKUP setting
A, B, C, N, K = Constants for the particular curve
Summary of Contents for BE1-DFPR
Page 10: ...BE1 DFPR General Information 1 4 Figure 1 1 Terminal Screens Flow Diagram Sheet 1 Of 2 ...
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Page 12: ...BE1 DFPR General Information 1 6 Figure 1 2 Terminal Screens Flow Diagram Sheet 2 Of 2 ...
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Page 24: ...BE1 DFPR General Information 1 18 Figure 1 4 Style Number Identification Chart ...
Page 26: ...BE1 DFPR General Information 1 20 KIWTG 6KOKPI 1RVKQP 5 5JQTV PXGTUG ...
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Page 28: ...BE1 DFPR General Information 1 22 KIWTG 6KOKPI 1RVKQP QPI PXGTUG ...
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Page 48: ...BE1 DFPR General Information 1 42 KIWTG 6KOKPI 1RVKQP KZGF 6KOG ...
Page 50: ...BE1 DFPR Controls and Indicators 2 2 Figure 2 1 BE1 DFPR Horizontal Mount ...
Page 51: ...BE1 DFPR Controls and Indicators 2 3 ...
Page 52: ...BE1 DFPR Controls and Indicators 2 4 Figure 2 2 BE1 DFPR Vertical Mount ...
Page 57: ...BE1 DFPR Controls and Indicators 2 9 Figure 2 3 Control Module Front Panel Horizontal Mount ...
Page 59: ...BE1 DFPR Functional Description 3 2 ...
Page 60: ...BE1 DFPR Functional Description 3 3 ...
Page 61: ...BE1 DFPR Functional Description 3 4 KIWTG WPEVKQPCN NQEM KCITCO ...
Page 70: ...BE1 DFPR Functional Description 3 13 and 50TN ...
Page 85: ...BE1 DFPR Installation 4 2 ...
Page 86: ...BE1 DFPR Installation 4 3 Figure 4 1 Outline Dimensions Rack Mounting ...
Page 87: ...BE1 DFPR Installation 4 4 ...
Page 88: ...BE1 DFPR Installation 4 5 Figure 4 2 Outline Dimensions Panel Mounting ...
Page 90: ...BE1 DFPR Installation 4 7 Figure 4 3 DC Control Connections Typical ...
Page 91: ...BE1 DFPR Installation 4 8 ...
Page 92: ...BE1 DFPR Installation 4 9 Figure 4 4 Connection Diagram ...
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Page 94: ...BE1 DFPR Installation 4 11 Figure 4 5 BE1 DFPR Rear View ...
Page 95: ...BE1 DFPR Installation 4 12 ...
Page 96: ...BE1 DFPR Installation 4 13 Figure 4 6 Communications Interface ...
Page 97: ...BE1 DFPR Installation 4 14 ...
Page 98: ...BE1 DFPR Installation 4 15 Figure 4 7 RS 232 Connection Diagram For IBM Type Computers ...
Page 100: ...BE1 DFPR Installation 4 17 Figure 4 9 RS 232 Interconnection Diagram For RFL 9660 Switch ...
Page 103: ...BE1 DFPR Testing 5 3 ...
Page 104: ...BE1 DFPR Testing 5 4 Figure 5 1 BE1 DFPR Test Simulator Front View ...
Page 105: ...BE1 DFPR Testing 5 5 ...
Page 106: ...BE1 DFPR Testing 5 6 Figure 5 2 BE1 DFPR Test Simulator Rear View ...
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Page 108: ...BE1 DFPR Testing 5 8 Figure 5 3 BE1 DFPR Test Simulator Schematic Diagram Sheet 1 of 2 ...
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Page 110: ...BE1 DFPR Testing 5 10 Figure 5 4 BE1 DFPR Test Simulator Schematic Diagram Sheet 2 of 2 ...
Page 111: ...BE1 DFPR Testing 5 11 ...
Page 112: ...BE1 DFPR Testing 5 12 Figure 5 5 Test Setup Diagram ...
Page 114: ...BE1 DFPR Testing 5 14 ...
Page 134: ...BE1 81 O U Maintenance 6 2 ...