Page 109 - Sace Emax 2 Catalogue
P. 109

ACCESSORIES                                                                       6/7














                           Mechanical signalling of the tripping of protection trip unit - TU Reset (Fig. 04)
                           The automatic circuit-breakers are always equipped with a mechanical device that signals
                           the tripping status of the protection trip units. After the Ekip trip unit has tripped due to an electrical
                           fault, the signalling device clearly indicates the tripping status on the front of the circuit- breaker. The
          —                circuit-breaker can be reset only after the signalling pushbutton has been restored to its normal oper-
          Fig. 04          ating position. The device conforms to the Ansi 86T standard.
                           Emax 2 is fitted with the anti-pumping function. With the anti-pumping function the opening order al-
                           ways takes priority over a closing order. Moreover, when the Circuit Breaker is in open position due to a
                           trip, the anti-pumping function allows the reclosing of the operating mechanism only after a reset of
                           the trip, avoiding improper or accidental closing.

                           Contact signalling tripping of protection trip unit Ekip – S51 (Fig. 05)
                           The contact signals the opening of the circuit- breaker after the Ekip protection trip unit has tripped.
                           The circuit-breaker can only be closed after the “TU Reset” tripped trip unit mechanical signalling push-
                           button has been restored to its normal operating position.
                           The switching contact, which is always supplied with the standard version of the automatic cir-
                           cuit-breakers, is also available on request in a version for digital signals (for electrical characteristics,
                           please refer to the RTC contact). It can also be associated with an optional accessory for resetting by
                           remote control - YR. For electromechanical characteristics, please refer to the RTC contact.
          —
          Fig. 05          For E2.2, E4.2 and E6.2 it is possible to double the signal for the tripping of the Ekip Trip Unit specifying
                           the dedicated code for the S51/2. The S51/2 is an alternative of the YR contact.
                           —
                           Electrical diagram reference: figure 11
                                                                                                                       06
                           Contact signalling loaded springs – S33 M/2
                           This contact is always supplied with a geared motor; it remotely signals the spring status of the circuit-
                           breaker operating mechanism. It is available in both standard version and version for digital signals.
                                                               Standard contact        Contact for digital signals
                           Type                                changeover contacts     changeover contacts
                           Minimum load                        100mA @ 24V             1mA @ 5V
                           Breaking capacity
                           DC         24V                      -                       0.1A
                                      125V                     0.3A @ 0ms              -
                                      250V                     0.15A @ 0ms             -
                           AC         250V                     5A @ cosϕ 1             -
                                                               5A @ cosϕ 0.7           -
                                                               5A @ cosϕ 0.3           -
                                      400V                     3A @ cosϕ 1             -
                                                               2A @ cosϕ 0.7           -
                                                               1A @ cosϕ 0.3           -
                           —
                           Electrical diagram reference: figure 12
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