Basler Electric BE1-87B - Manual (Page 6)

Manual
Revision and Date
Change
E, 10/01 •
Corrected the terminal numbering in Figure 2-5.
•
Changed the Power Supply Status Contacts label to Relay Trouble
Contacts in Figures 4-13 and 4-14.
•
Corrected various minor errors throughout the manual.
D, 03/01 •
Updated drawings, as required, to reflect changes to the cases and
overlays as a result of “pillow-type” switch implementation for CT Test
pushbutton.
•
Updated the style chart with front cover with CT test access option.
C, 04/00 •
Section 1: Added UL recognition to specifications. Changed voltage
rating specification from “75% of tap setting” to “300 Vac for 1 hour”.
•
Section 2: Corrected equation reference under Sample Calculation.
•
Section 4: Revised Figures 4-1 and 4-2 to show proper position of the
Reset button access on the S1 case.
•
Changed all power supply status references from “Relay Trouble Alarm”
to “Power Supply Status”.
B, 11/99 •
Added and updated drawings throughout the manual to accommodate
the three-phase version of the BE1-87B.
A, 08/99 •
Corrected various errors in the illustrations.
—, 06/99 •
Initial release
Hardware
Version
Change
T •
Improved snubber resistor and SCR protection circuit.
S •
Updated internal documentation.
R •
Improved ribbon cable.
Q
•
This revision letter not used.
P •
Improved reset switch on front panel.
O •
This revision letter not used.
N •
Improved factory assembly process.
M
•
Improved snubber circuitry to prevent false tripping.
L
•
Internal factory documentation updated.
K •
Improved power supply board.
J •
Improved stability of Relay Trouble output contacts during power-
up/power-down.
H •
Not released to production.
G •
Corrected labeling for CR1 and CR3 polarity on the SCR circuit board.
F
•
Improved relay stability during cycling of operating power.
E •
CT Test pushbutton changed to “pillow-type” switch. Optional case cover
with CT Test pushbutton access introduced.
D •
Improved immunity to ESD.
C •
Applied Revision A enhancements to three-phase relays with new circuit
board design.
B
•
New circuit board design released for single-phase relays.
iv BE1-87B Introduction 9282300990 Rev P