BASLER ELECTRIC BE1-87T-A1E-A1J-D0S1F / BE187TA1EA1JD0S1F

BASLER ELECTRIC BE1-87T-A1E-A1J-D0S1F / BE187TA1EA1JD0S1F

protection is provided when the auxiliary voltage input is connected to the generator grounding resistor

voltage, the 27X element is set for third harmonic undervoltage, and the 59X is set for the auxiliary

voltage fundamental.

With the auxiliary voltage input connected to the bus, one sync-check function provides synchronism

protection when putting the generator online (25). Sync-check protection checks for phase angle

difference, magnitude difference, frequency difference (slip) and, optionally, if the generator frequency is

greater than the bus frequency.

One negative-sequence overvoltage element provides protection for phase unbalance or a reverse

system phase (47).

Voltage transformer circuit monitoring adds security by detecting problems in the voltage transformer

sensing circuits and preventing misoperations of the 27P, 127P, 47. 59P, 159P, and the 51/27 functions

(60FL).

Directional Power Protection

Two directional power elements provide loss of prime mover protection and/or sequential trip, shutdown

operation (32. 132). Each directional power element can be set individually for forward or reverse power.

The power measurement algorithm is adapted as appropriate for any possible three-phase or single

phase voltage transformer connection. Directional Power is calibrated on a three-phase basis regardless

of the voltage transformer connection used.

Frequency Protection

Four over/underfrequency protection function blocks are provided: 81. 181. 281. and 381. Each function

block can be set for overfrequency or underfrequency operation.

Loss of Excitation

Loss of excitation protection consists of two elements (40Q, 140Q) that use offset sloped var flow

algorithm.

Breaker Failure Protection

One breaker failure protection block (BF) provides programmable breaker failure protection.

General Purpose Logic Timers

Four general-purpose logic timers (62. 162. 262. and 362) with six modes of operation are provided.

Setting Groups

Two setting groups allow adaptive relaying to be implemented to optimize BE1-GPS100 settings for

various operating conditions. Setting group selection can be made via relay logic, 43 auxiliary switches,

and hard-wired inputs.

Virtual Control Switches

BE1-GPS100 virtual control switches include one virtual breaker control switch and four virtual switches.

Trip and close control of a selected breaker can be controlled by the virtual breaker control switch (101).

The virtual breaker control switch is accessed locally from the front panel human machine interface (HMI)

or remotely from the communication ports.

Additional control is provided by the four virtual switches: 43. 143. 243. and 343. These virtual switches

are accessed locally from the front panel HMI or remotely from the communication ports. Virtual switches

can be used to trip and close additional switches or breakers, or enable and disable certain functions.

Metering Functions

Metering is provided for all measured currents, voltages, and frequency and all derived neutral and

negative-sequence currents and voltages. Three phase watts, vars, and power factor is provided. Per

phase watts and vars is also provided when the VT connection is 4W.

Reporting and Alarm Functions

Several reporting and alarm functions provide fault reporting, demand, breaker, and trip circuit monitoring,

as well as relay diagnostic and firmware information.

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