Specifications, Current sensing, Current sensing burden – Basler Electric BE1-40Q User Manual
Page 12: Voltage sensing, Pickup range, Pickup accuracy, Dropout, Time delay range, Timing accuracy, Current

SPECIFICATIONS
BE1-40Q electrical and physical specifications are listed in the following paragraphs.
Current Sensing
Unit is designed to operate from the secondary of a standard current transformer rated at 5 A, 50 and 60
Hz (based on configuration). Internal current sensing transformers are rated at 10 A continuous, 15 A for
1 minute, and 200 A for 1 second.
Current Sensing Burden
Maximum sensing burden is less than 0.1 ohm at pickup over the frequency range of 45 to 65 Hz.
Voltage Sensing
Three line-to-line voltage sensing inputs are available: 120, 208, and 240 Vac (nominal). Each have a
burden that is less than 1 VA over the frequency range of 45 to 65 Hz.
Pickup Range
Refer to Table 1-1.
Table 1-1. Pickup Ranges
Sensing Input
Range
Tap
A
B
C
D
E
F
G
H
J
K
2
120 Vac
HI
20
40
60
80
100
120
140
160
180
200
LOW
5.0
10
15
20
25
30
35
40
45
50
3
120 Vac
HI
100
200
300
400
500
600
700
800
900
1000
LOW
25
50
75
100
125
150
175
200
225
250
5
208 Vac
HI
40
80
120
160
200
240
280
320
360
400
LOW
10
20
30
40
50
60
70
80
90
100
6
208 Vac
HI
200
400
600
800
1000
1200
1400
1600
1800
2000
LOW
50
100
150
200
250
300
350
400
450
500
8
240 Vac
HI
40
80
120
160
200
240
280
320
360
400
LOW
10
20
30
40
50
60
70
80
90
100
9
240 Vac
HI
200
400
600
800
1000
1200
1400
1600
1800
2000
LOW
50
100
150
200
250
300
350
400
450
500
Pickup Accuracy
±2% of the front panel setting or ±0.1 var, whichever is greater for a power factor angle of –90°.
Dropout
Not less than 95% of actual pickup.
Time Delay Range
Definite time delay is adjustable by two front panel thumbwheels over a range of 01 to 99 (0.1 to 9.9
seconds) in increments of 0.1 seconds. A setting of 00 enables instantaneous operation.
Timing Accuracy
Shown in Figure 1-5. Note that each curve is slightly offset by a factor that represents integration time.
Repeatability is within
±5% or 25 milliseconds, whichever is greater.
1-4
BE1-40Q General Information
9171500990 Rev N