BE1-50/51M - Manual Change Information 7-1
SECTION 7 • MANUAL CHANGE INFORMATION
SUMMARY AND CROSS REFERENCE GUIDE
This section contains information concerning the previous editions of the manual. The substantive changes to
date are summarized in Table 7-1.
Table 7-1. Changes
Revision Summary of Changes ECA/ECO/Date
A Changed manual title to BE1-50/51M and incorporated engineering
changes accordingly.
12605/05-12-92
B Changed the following pages.
1-1. Application, deleted reference to dust tight cover.
1-4. Specifications, TIME Dropout to not less than 95% of
pickup value.
1-7. Specifications, Time Reset, added statement to insure
sufficient power to power-up relay when using decaying
characteristic.
1-8. Specifications, corrected Storage Range Temperature
degrees F.
1-9. Defined British Standard curve types.
2-1. INST and TIME PICKUP selectors, added statement that
changing selectors while relay is in service may cause
tripping.
4-7. Time Pickup Test, Step 1., Changed 0.45 A to 0.485 A.
4-9. Time Pickup Test, Step 1., Changed 0.09 A to 0.096
A.4-11.Added paragraph SETTING THE RELAY
6-1. Added Section 6.
12822/09-02-92
C Added column for CT secondary to Table 1-1 and UL Recognition
and CSA Certification to specifications. Changed the following
pages.
3-2 Deleted "or reset" from last sentence in paragraph
Outputs
. Changed from "The targets will not operate or
reset ..." to "The targets will not operate..."
4-1 Corrected dielectric test leakage current per terminal
and changed rack mounting plate part number from "9
2520 00 024" to "9 2520 12 001".
4-3 Added BE1-50/51M, vertical model rear view to Figure
4-3.
13392/06-04-93
D Changed continuous current sensing input rating, and clarified TIME
PICKUP and INST PICKUP specification ranges, page 1-4.
Changed Figure 1-3 to also show one ampere unit burden data.
Changed time characteristics accuracy statement, page 1-7. Added
(repeated) equation for the characteristic curve time functions, page
1-9. Changed Figure 1-5 to show one ampere unit starting data.
Separated
Section 4 Installation
, into
Section 4 Installation
, and
Section 5, Testing
and bumped all subsequent sections.
14240/05-27-94
Courtesy of NationalSwitchgear.com
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