Basler Electric BE1-79M - Manual (Page 67)

9170100990 Rev N BE1-79M Difference Data 7-1
SECTION 7 • DIFFERENCE DATA
General
This section provides the information necessary to support BE1-79M Multiple Shot Reclosing Relays,
Revision D and previous.
Differences
BE1-79M Multiple Shot Reclosing Relay, Revision F added the following features and capabilities.
• Six additional control output options
• Two additional reclose time delay options
• Y-type power supply option
• Reset timer 1-100 second time delay option
• Four additional special contact assignment options
• A four function, 16 position, field selectable logic switch
• Moved sensing input power module from outside the case to inside the case
The following style number identification chart is applicable to relays, revision D and previous, and will
identify those relay features and capabilities. Disregard information contained in Sections 2 through 6 of
this instruction manual that are peculiar to relays, revision F and subsequent. For installation, testing, and
maintenance of revision D and previous relays, the following information is necessary.
Compatibility
Revision E and subsequent are backward compatible with revision D and previous with one exception.
This exception is a relay with a type Z power supply (250 Vdc/230 Vac) and isolated sensing. To use a
relay revision E or subsequent in a revision D or previous relay installation (case), the external sensing
module (part number 9170206101 or part number 9170206102) must be removed from the wiring scheme
and connected for isolated sensing as shown in Figure 4-8. All other revision E and subsequent relays
may be installed into existing installations (cases) without rewiring.
NOTE
Be sure the relay case is hard-wired to earth ground with no smaller than 12
AWG copper wire attached to the ground terminal on the rear of the relay
case. When the relay is configured in a system with other protective devices, it
is recommended to use a separate lead to the ground bus from each relay.
Connections
External connections for the contact sensing inputs are made at the power module on the rear of the relay
case (Figure 7-1). External connections for the output contacts are made at the relay case terminals. If a
type Z power supply has been selected, external connections for the contact sensing inputs are made at
the sensing input module located external to the relay. The sensing input module may be located remote-
ly from the relay. Typical sensing input module connections wired to the remote power module are shown
in Figure 7-2. Connections should be made using a minimum wire size of 14 AWG stranded wire except
as noted for the ground wire.