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RI SRI

Rotary load break switch

RI and SRI type for Rotobloc and Arcobloc switchboards

RI 24 kV - 400 A - 12,5÷16 kA

  • RI rotary load break switches are designed to be easy mounted in M.V. switchboards having a front size of 700 mm
  • they provide a mechanical segregation between the upper and the lower busbars compartment and assure a IP2X protection
  • maintenance operations are very easy because the complete switch can be drawed out of the panel and the operating mechanism is removable and can be replaced by taking the switch off the cubicle
  • they comply with CEI EN / IEC 62271-103 standards and are homologated for ENEL DY400 specifications
  • quick opening and closing operations are independent from the user.

SRI  24 kV - 400-630-800-1250 A

  • SRI double sectioning rotary disconnectors are designed for easy installation into M.V. switchboards having a front size of 700, 750 and 900 mm.
  • they comply with CEI EN / IEC 62271-102. standards.
  • features about segregation and maintenance operations are the same as per RI type.

Motorized load break switch

type RI.M: motorized version of RI deadcenter overcoming type
- electrical and dimensional characteristics are the same as per the manual version
- LBS contacts position stability is always guaranteed until the dead center is overcome.
- in case of missing power supply during operation, the system comes back at rest and unloads the springs.
- supply voltage: 24 Vcc +/- 20%.
- power required: < 250 W.
- ambient temperature range: –15° + 40°c.

type RI.SM: motorized version of power stored RI.S type.
- electrical and dimensional characteristics: same as per manual version.
- the LBS contacts position stability is always guaranteed until the operation is completed.
- instant opening can be manually performed or carried out by a remote opening electromagnet coil.
- supply voltage: 48 or 110 Vcc.
- power required: < 500 W.
- ambient temperature range: –15° + 40°c.

Manufacturing features and fittings

• epoxy resin moving equipment fitted with earthed moving contacts in the opening position.
• epoxy resin post insulators supporting the fixed contacts and busbars fixing.
• RI type: epoxy resin lower insulators with blow device and complete with fixed contact.

Earth switches

STS - without insulators, suitable for RI, RI.S and SRI types.
ST - with insulators (for RI, RI.S and SRI types).
STV - with insulators and a set of three fuseholder tongs,
suitable for RI.SV and SRI.V types.
ST SUP - with upper insulators suitable for RI, RI.S and SRI types.
STV SUP - with insulators and a set of three upper fuseholder tongs suitable for RI.SV type.
- the above mentioned switches are foreseen with C/version with capacitor deviders.

Locks

Key-lock or electromechanical lock, able to satisfy several needs.


Auxiliary contacts
Auxiliary contacts for: load break switch; disconnecting switch; earth switch.

- shunt trip coil (only for RI.S and RI.SV).