BE1-51/27C General Information
1-9
Vibration:
In standard tests, the relay has withstood 2 g in each of three mutually per-
pendicular planes, swept over the range of 10 to 500 Hz for a total of six
sweeps, 15 minutes each sweep, without structural damage or degradation
of performance.
Weight
Single-Phase: 13.0 lbs. (5.9 kg)
Three-Phase: 14.0 lbs. (6.4 kg)
Three-Phase-and-Neutral: 14.4 lbs. (7.2 kg)
Case Size
S1.
TIME OVERCURRENT CHARACTERISTIC CURVES
Graphs on the following pages illustrate sample characteristic curves for all of the time overcurrent functions
individually as options, or selectable by switch (if the Z1, Z2, or Z3 timing option is specified). Z1 option can
select any of the timing types designated as B1 through B8, and C1 through C8. Z2 option can select any
of the timing types designated as B1 through B8, and the British Standard timing types: E2, E4, E5, E6, and
E7. Z3 option can select the integrating algorithm for any of the timing types designated as B1 through B8,
and C1 through C8.
Note that there are two versions of each timing type: standard and extended timing. Both types are located
on the same page. The exception to this is the British Standard curves which do not have an extended
timing version. For any given relay, either the standard or the extended range version will apply, never both.
A drawing number is provided with each characteristic curve chart. Use this number to order the full-size
(11" X 17") characteristic curve chart on transparent paper (vellum). Publication 9 1372 00 897 contains 36
full size characteristic curve charts (timing options Z1 and Z2). To order any of these characteristic curve
charts, contact Customer Service Department of the Power Systems Group, Basler Electric.
Summary of Contents for BE-51/27C
Page 1: ...0 1 2 3 4 5 67869 ABC DEF G 6H II GGJ KL M DEF DEK...
Page 16: ...BE1 51 27C Controls and Indicators 2 2 Figure 2 1 Location of Controls and Indicators...
Page 20: ...BE1 51 27C Controls and Indicators 2 6...
Page 22: ...BE1 51 27C Functional Description 3 2 Figure 3 2 Functional Block Diagram...
Page 32: ...BE1 51 27C Installation 4 7 Figure 4 10 Typical Internal Diagram Sensing Input Type L...
