BE1-50/51M-222 General Information
1-4
TIME PICKUP
Accuracy
±2% ±25 milliamperes at or above 0.5 ampere settings.
Frequency Response
A change of ±5 hertz from the nominal 50/60 hertz current causes less
than 0.5% change in the current required for pickup.
TIME DIAL Range
0.0 to 9.9, in 0.1 steps.
INST PICKUP Range
1 to 99 amperes in 1 ampere steps. Setting the INST PICKUP to the
minimum pickup (1.0), places the relay in the most sensitive state and may
be used as a safety setting.
INST Dropout
Dropout occurs at 95% of pickup value.
INST PICKUP
Accuracy
±2% ±25 milliamperes at or above 1.0 ampere settings.
Frequency Response
A change of ±5 hertz from the nominal 50/60 hertz current causes less
than 0.5% change in the current required for pickup.
INST Transient Response
Less than 10% overreach with system time constants up to 40
milliseconds.
Burden
Burden is non-linear. At 0.5 amperes, Z = 4.8 ohms. At 5.0 amperes,
Z = 0.2 ohms. (Figure 1-3 illustrates the device burden.)
Figure 1-3. Device Burden Characteristics
Summary of Contents for BE1-50/51M-222
Page 29: ...BE1 50 51M 222 Installation 4 2 Figure 4 1 Outline Dimensions C1 Case ...
Page 30: ...BE1 50 51M 222 Installation 4 3 Figure 4 2 Panel Drilling Diagram C1 Case ...
Page 32: ...BE1 50 51M 222 Installation 4 5 Figure 4 4 DC Control Connections ...
Page 33: ...BE1 50 51M 222 Installation 4 6 Figure 4 5 BE1 50 51M 222 Overcurrent Relay Rear View ...
