1-6 BE1-951 General Information 9328900990 Rev L
• Applications that require the economy and space savings provided by a multifunction, multiphase
unit. This one unit can provide all of the protection, control, metering, and local and remote
indication functions required on a typical circuit.
• Applications that require directional control and fault locating.
• Applications requiring protection of an intertie between dispersed storage and generation facilities
(DSG) and a utility.
• Transformer backup applications where overexcitation protection is required.
• Applications that require communications and protocol support.
• Applications where the capabilities of a digital multifunction relay are required, yet draw out
construction is also desirable.
• Applications where bus protection is provided by a high-speed overcurrent blocking scheme on
the transformer bus mains instead of a dedicated bus differential circuit.
• Applications where the small size and limited behind-panel projection facilitates modernizing
protection and control systems in existing substations.
MODEL AND STYLE NUMBER DESCRIPTION
General
The BE1-951 Relay electrical characteristics and operational features are defined by a combination of
letters and numbers that make up the style number. The model number, together with the style number,
describe the options included in a specific device and appear in the clear window on the front panel and
on a sticker located inside the case. Upon receipt of a relay, be sure to check the style number against
the requisition and the packing list to ensure that they agree.
Sample Style Number
Style number identification chart,
Figure 1-1, defines the electrical characteristics and operational features
included in BE1-951 Relays. For example, if the style number were E3N1H0Y, the device would have the
following characteristics and features:
BE1-951
(E) - 5 ampere nominal system with 5 ampere independent ground input
(3) - Three-phase voltage sensing
(N) - Not applicable
(1) - 48/125 Vac/Vdc power supply
(H) - Half rack case, normally closed alarm output
(0) - ASCII communication
(Y) - 4000 point Data Array
To Next Page
Loading...
Need help?
General