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

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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

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