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The second shunt opening release located the same seat the undervoltage release and its technical
characteristics are the same the standard shunt opening release.110% Un
Circuit-breaker opening takes place with power supply voltage values the release equivalent 70% Un. Accessories
10. Given the characteristics the circuit-breaker operating mechanism, opening
(with the circuit-breaker closed) always possible, whereas closing only possible when the closing springs are loaded.10.
Reference figures the electrical circuit diagrams: (4) (2) YO2 (8)
Power supply (Un) DC___________________ Operating limits (YO-YO2) 70. can used for remote
tripping (by means normally closed type pushbuttons), lock closing control the voltage the primary and secondary circuits. This release carries out instantaneous service (*), but can supplied permanently (**). Most the releases can operate with either direct alternating
current.
In some versions necessary have very high degree safety for the remote opening control the circuit-breaker, and, particular, the
duplication the control circuit the shunt opening release required. Most the releases
can operate with either direct alternating current.
(*) case stan tane ous service, ration the rre pulse ust 100 ms.
The release power supply therefore branched the supply side the circuit-breaker from independent source.)
Model 3447
Apparatus Emax DC
Scale
D oc-N 1SDH000635R0002
Page No.
23/108
.
In uses where the shunt closing release supplied permanently, carry out the circuit-breaker reclosing operation after opening, necessary
to momentarily de-energize the shunt closing release (the circuit-breaker operating mechanism reclosing is, fact, fitted with antipumping
device).)
440 AC
Undervoltage release (YU)
The undervoltage release opens the circuit-breaker the case considerable drop lack its power supply voltage. order achieve this, you can fit the SACE Emax circuit-breakers with
a second shunt opening release.
It can fitted with signalling contact for undervoltage release energized (C. (YC): 85% ..1 lectrical acce sso rie s
Shunt opening/closing (YO/YC) and second shunt opening release (Y02)
This allows remote opening closing control the apparatus..
Reference figures the electrical circuit diagrams: (6)
Inrush power consumption (Ps): 200 W
AC 200 VA
Continuous power (Pc): W
AC VA
Opening time (YU): ms
Insulation voltage 2500 (for min..
(**) case anent pow the release, ust least before giving tro clo sin release.110% Un
30 AC/DC________________ (CEI 60947-2 Standards) (yc) Un
48 AC/DC________________ Inrush power consumption (Ps) 200 W
60 AC/DC________________ Inrush power time ~100 200 VA
110-120 AC/DC__________ Continuous power (Pc) W
120-127 AC/DC__________ ____________________________________ VA______________
220-240 AC/DC__________ Opening time (YO YO2) (max) ms
240-250 AC/DC__________ Closing time (YC) (max) ms
380-400 AC______________ Insulation voltage 2500V (for min.
Power supply (Un) DC______________
30 AC/DC______________
48 AC/DC______________
60 AC/DC______________
110-120 AC/DC_________
120-127 AC/DC_________
220-240 AC/DC_________
240-250 AC/DC_________
380-400 AC_____________
____________________________________ 440 AC_____________
Operating limits: (YO-YO2): 70% ....110% Un
(CEI 60947-2 Standards).
Circuit-breaker closing possible with power supply voltage the release equivalent 85-110% Un. aux YU). Circuit-breaker closing
is only allowed with the release powered (the closing lock carried out mechanically)
