The mvaa is a low burden auxiliary relay which is used to provide multiple contact requirements for protection schemesthe mvaa auxiliary relay is compact in design is mechanically stable. It is user.
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Alstom auxiliary relay vaa wiring diagram. Vaa 3133 are triple pole versions of vaa 111213 respectively. This will depend on the technical and commercial circumstances. Alstom relay manuals alstom auxiliary relay manual vaa21 relay catalogue mvaa23 areva areva relays catalogue free download auxiliary relay vaa 33 alstom mvaa relay wiring diagram mvaa aux relay manual. 22 wiring 12 23 preliminary checks 12. Any agreements commitments and legal relationships and any obligations on the part of. Prima has mechanical coding to ensure plug in to the correct socket with a secure snap lock fitting for retention.
Vaa212223 are double pole versions of vaa 111213 respectively. 91 9717005541 011 45631920 91 9717003393. Manufacturing for mvaa12 mvaa15 and mvaa22 models has been discontinued. The auxiliary supply circuit in the relay may include capacitors across the supply or to earth. Vaa212223 are double pole versions of vaa 111213 respectively vaa 3133 are triple pole versions of vaa 111213 respectively. Contact the appropriate alstom grid technical sales office and request the necessary information.
Vaa11 datasheet vaa11 pdf vaa11 data sheet vaa11 manual vaa11 pdf vaa11 datenblatt electronics vaa11 alldatasheet free datasheet datasheets data sheet. The auxiliary supply circuit in the relay may include capacitors across the supply or to earth. Standard vaa 1121 relays are suitable for acdc supply and standard vaa 1323 relays are suitable for dc supply only. Should an issue ever arise changing out a relay for a strategic spare is fast and simple. As an alternative please refer to the prima relays. When it is necessary to break heavy or highly inductive dc loads heavy duty.
The relays are attracted armature units of compact design with positive action and a high degree of mechanical stability. Auxiliary relays type arevaalstom vaa auxiliary relays are voltage operated relays. To avoid electric shock or energy hazards after completely isolating the supplies to the relay both poles of any dc supply the capacitors should be safely discharged via the external terminals prior to decommissioning. The former offers easy accommodation and wiring into the fixed electrical scheme with the relay plugging in as required.
