Wedge type line connectors

MAHAVITARAN DISTRIBUTION- SPECIAL PROJECT CELL

TECHNICAL SPECIFICATION - 31

TECHNICAL SPECIFICATION

FOR

H.T./L.T. WEDGE TYPE LINE CONNECTORS

SEAL & SIGNATURE OF THE TENDERER

PAGE 1 OF 9

MAHAVITARAN DISTRIBUTION- SPECIAL PROJECT CELL

TECHNICAL SPECIFICATION - 31

TECHNICAL SPECIFICATION FOR H.T. /L.T. WEDGE TYPE LINE CONNECTORS (SPECIFICATION NO.MM/I/HTLT WEDGE TYPECONNECTORS/2007) 1. SCOPE: The specification covers design, manufacture, shop testing, packing and delivery of HT & LT Wedge Type overhead line connectors for Jumpers, cut-points, T-connections and service connections by road/rail to the designated Store Centers in the State of Maharashtra.. 2. SERVICE CONDITIONS: Equipment to be supplied against this specification shall be suitable for satisfactorycontinuous operation under the following tropical conditions. 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 Maximum ambient temperature (deg C) Maximum temperature in shade (deg C) Minimum temperature in air (deg C) in shade Relative Humidity (%) 50 45 3.5 10 to 100 1450 150 1000 50 0.3 g. 30 150

Maximum annual Rainfall (mm) Maximum Wind Pressure (kg/Sqmm) Maximum altitude above mean sea level (Meters)Isoceraunic level (days/year) Seismic level (Horizontal acceleration)

2.10 Ground temperature (deg. C) 2.11 2.12 3. Thermal Resistivity of soil (deg. C cm / watt ) Moderately hot and humid tropical climate, Conducive to rust and fungus growth. STANDARDS:

Unless otherwise specified elsewhere in this specification, the rating as well as performance and testing of the HT & LT overhead lineconnectors shall conform to the latest revisions available at the time of placement of order of all the relevant standards as listed below:1) ANSI C 119.4 2) I.S.5561/1970. 4. 4.1 GENERAL TECHNICAL REQUIREMENTS FOR LT (UNIVERSAL DISTRIBUTION CONNECTORS TYPE): WEDGE CONNECTORS:
SEAL & SIGNATURE OF THE TENDERER

WEDGE

CONNECTORS

PAGE 2 OF 9

MAHAVITARAN DISTRIBUTION- SPECIAL PROJECT CELLTECHNICAL SPECIFICATION - 31

The connector shall confirm to ANSI C 119.4. It consist of a spring ' C ' member and a Wedge, both made from a special tin plated copper alloy in a configuration that creates spring action. The ' C ' member and a Wedge shall be factory coated with a conductive inhibitor containing abrasive particles to help in cleaning the contact surface during installation. Theconnector shall be useful for the conductor size of ANT, GNAT, WEASEL and service connection cables of sizes 2.5, 4.0 and 10 sq.mm. The connector shall be of Universal Distribution Connector (UDC) type. They shall connect conductors of Aluminium, Copper, Steel and their alloys regardless of the combination (i.e. Al to Al, Al to Cu, Cu to Cu). These connectors shall provide a noncorrosive action thatis protected against temperature variation and overloading. Also, connector shall provide a reliable electrical as well as mechanical connection for solid. Stranded or compressed conductor combinations including AAC. AAAC and ACSR. A good connection shall be easily verified by visual inspection. All the connectors shall be removed without damaging the conductor and the conductor as well asconnector can be used again. 4.2 " C " MEMBER: The C member shall be formed from a special Copper alloy so that the grain (extrusion direction) runs perpendicular to the conductor (e.g. from C-groove end to C-groove end). This orientation of grain direction provides for lower rates of stress relaxation in the metal and will maintain the level of contact pressure at or near the value at initialinstallation for the life of connection. Susceptibility to stress corrosion cracking will also improve. The material used shall be specially designed with close tolerances on the chemical composition to ensure consistency of the C- member production regarding dimensions and mechanical properties. 4.3 WEDGE: The dimensions for the wedges are manufactured to close tolerances to ensure repeatability and...