Basler Electric 9099800110 overview
Basler Electric 9099800110 BE2-40-11 Excitation Relay (Over Exc.), 10 amp-turns nominal, 15 amp-turns continuous, Current Sensing Input, 2 to 10 amp-turns Pull-...
Product details
Manufactured byBasler Electric
Product groupExcitation Relay
DescriptionBasler Electric 9099800110 BE2-40-11 Excitation Relay (Over Exc.), 10 amp-turns nominal, 15 amp-turns continuous, Current Sensing Input, 2 to 10 amp-turns Pull-in Adjust. 40% to 90% of pull-in Dropout Adjust. 0.2 to 60 sec. Timing Adjust Range.The BE2-40 consists of eight models: the BE2-40-1 and -2 Loss of Excitation Relays offer two available nominal sensing input ranges (200A and 800A) and no time delay; the BE2-40-3 Under Excitation Relay, BE2-40-4 Over Excitation Relay have one nominal sensing input range (200A) and an adjustable time delay of 0.2 to 60 seconds; the BE2-40-5 Under Excitation Relay, BE2-40-6 Over Excitation Relay have a nominal sensing input range (800A) and an adjustable time delay of 0.2 to 60 seconds; and the BE2-40-11 Over Excitation Relay, BE2-40-12 Under Excitation Relay have a nominal sensing input range (10A) and an adjustable time delay of 0.2 to 60 seconds. The time delays prevent transient current conditions from activating the output relay. Power for the relays is provided by a separate ac source. All models consist of a behind-the-panel mounted module and a separate current sensor which allows the module to be isolated from the field. The pull-in setting is adjustable between 2 to 10 ampere-turns, 90 to 200 ampere-turns or 360 to 800 ampere-turns, depending on the model number (See Table 1). The dropout setting (always set below the pull-in setting) is adjustable between 40% and 90% of the pull-in setting.Over Excitation Relay. When the field current exceeds the pull-in adjust setting, the output relay will energize after the preselected time delay. When the current decreases below the dropout setting, the relay de-energizes instantaneously.Under Excitation Relay. When the field current drops below the dropout adjust setting, the output relay de-energizes after the preselected time delay. When the current increases above the pull-in adjust setting, the output relay energizes instantaneously.Loss of Excitation Relay. Operation is identical to the Under Excitation Relay, but with no intentional time delay.
ApplicationsThe BE2-40 Excitation Relays protect a generator against overexcitation, underexcitation, or loss of excitation, preventing damage to the generator and/or to other generators in the system. The relays, applicable to both ac and dc generators, offer high reliability at low cost, providing fast, precise response to all predetermined excitation current abnormalities.
Key FeaturesSolid-state design. Separate current transducer can be installed in any area convenient to field leads. Adaptable to a wide range of dc currents and machine sizes. Pull-in and Dropout points independently adjustable. Optional adjustable time delay. Three models: for loss of excitation protection, overexcitation protection, underexcitation protection. Automatic reset. Mechanically rugged. Available from stock.
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