Basler BE1-50B, Инструкция по эксплуатации

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1-6 BE1-50/51B-General Information
Figure 1-3. Harmonic Response
INST Characteristics BE1-50/51B instantaneous characteristic curves are similar to standard
electromechanical instantaneous units. However, the time to trip for
ground applications is slightly longer than that for phase applications to
allow time to power-up the relay. Longer trip time for ground
applications is beneficial because it helps to avoid nuisance trips.
For phase applications, the maximum time to trip is 3.5 cycles at a
pickup multiple of 1.0, and 1.5 cycles at a pickup multiple of 3.0. The
corresponding times for ground applications are 4.5 and 1.75 cycles.
Figure 1-4 shows the instantaneous characteristic curves for maximum
time to trip.
On 100 series relays, additional delays of 0.1, 0.2, or 0.3 seconds may
be added with internal switches SW8-2 and -3. These delays apply to
both phase and ground applications. Closing switch SW8-2 provides an
additional delay of 0.1 second. Closing switch SW8-3 provides an
additional delay of 0.2 second. Closing both switches SW8-2 and -3
provides an additional delay of 0.3 second. Section 2 illustrates the
location of SW8.