1-8
BE1-24 General Information
SPECIFICATIONS
Voltage Sensing
The sensing input transformer has a voltage measuring range of 10
to 360 Vac with a typical frequency measuring range of 3 to 72
hertz. Maximum sensing burden is 3.5 VA. The sensing circuits
have an absolute maximum rating of 5 volts/hertz to enable the
relay to perform correctly for all system operating conditions.
Power Supply
Power for the internal circuitry may be derived from ac or dc
external power sources. Power supply voltages, ranges, and
burden are provided in Table 1-1.
Table 1-1. Power Supply Types And Specifications
Type
Nominal Input
Input Voltage
Burden at
Voltage
Range
Nominal
K (Mid Range)
48 Vdc
24 to 150 Vdc
4.0 W
J (Mid Range)
125 Vdc
24 to 150 Vdc
4.0 W
120 Vac
90 to 132 Vac
10.0 VA
L (Low Range)
24 Vdc
12 † to 32 Vdc
4.0 W
Y (Mid Range)
48 Vdc
24 to 150 Vdc
4.0 W
125 Vdc
24 to 150 Vdc
4.0 W
Z (High Range)
250 Vdc
62 to 280 Vdc
5.0 W
240 Vac
90 to 270 Vac
12.0 VA
† Type L power supply initially requires 14 Vdc to begin operating. Once operating, the
voltage may be reduced to 12 Vdc and operation will continue.
Outputs
Output contacts are rated as follows:
Resistive
120/240 Vac
Make 30 amperes for 0.2 seconds, carry 7 amperes continuously,
and break 7 amperes.
125/250 Vdc
Make 30 amperes for 0.2 seconds, carry 7 amperes continuously,
and break 0.3 amperes.
Inductive
120/240 Vac,
Make 30 amperes for 0.2 seconds, carry 7 amperes
125/250 Vdc
continuously, and break 0.3 ampere. (L/R = 0.04).
Pickup Adjustment Ranges
Adjustable from 1.00 to 3.99 in 0.01 V/Hz increments. (Any
(Timed Trip, Alarm, and optional
setting above 3.99 V/Hz or below 1.00 V/Hz is limited to 3.99 and
Instantaneous Trip)
1.00 V/Hz respectively.)
Pickup Accuracy
Pickup accuracy is dependent upon sensed frequency as shown in
Table 1-2.
Summary of Contents for BE1-24
Page 9: ...1 4 BE1 24 General Information Figure 1 1 Inverse Square vs Two Step...
Page 10: ...BE1 24 General Information 1 5 Figure 1 2 Protection Characteristics of the BE1 24...
Page 12: ...BE1 24 General Information 1 7 Figure 1 3 Style Number Identification Chart...
Page 16: ...BE1 24 General Information 1 11 Figure 1 4 Inverse Square Characteristic Curves...
Page 19: ...2 2 BE1 24 Human Machine Interface Figure 2 1 Location of Controls and Indicators...
Page 27: ...4 2 BE1 24 Installation Figure 4 1 M1 Case Outline Dimensions Front View...
Page 30: ...BE1 24 Installation 4 5 Figure 4 4 M1 Case Double Ended Panel Drilling Diagram Rear View...
Page 31: ...4 6 BE1 24 Installation Figure 4 5 M1 Case Panel Drilling Diagram...
Page 32: ...BE1 24 Installation 4 7 Figure 4 6 M1 Case Projection Mounting Outline Dimensions Rear View...
Page 34: ...BE1 24 Installation 4 9 Figure 4 7 Typical Internal Connections...
