PROVIDING MAINENANCE FREE, ECO-FRIENDLY, READY CAPSULE, PIPE-in-CAGE (PiC) TYPE EARTHING ON TRANSFORMER CENTERS OF 11KV SKY AG FEEDERS (e-Tender).

Schedule A (Part-I) (for 2000mm Electrode)

(Technical Specification and Schedule for Providing Maintenance Free, ECO Friendly, Ready Capsule, PIPE-in-CAGE (PiC) Type

Earthing on Transformer center of 11KV Kranti AG Feeder under SKY Scheme of Bantwa Sub Division)

Sr Particulars QTY Rate per Total

No. Require On Nos Amount

Confirming to IS : 1161-2014

(A) For 2000 mm Electrode

Length (L): 1900 mm(pipe)+100mm(terminal)=2000 (min)

Outer Diameter (Ø): 48 mm (hollow) Thickness (T): 3.2 mm(min)

Weight of electrode: 7.1 (Kg) at lease. Crossing section Area: 4.53 cm2

2 Galvanized Perforated cage of Earthing:

a) 1890 mm X 150 mm for 2000 mm Electrode

b) Circular Hole size of Net : 3.5 mm Dia. Or lesser

c) Thickness of Net: 1.5 mm (min) with hot dig galvanized

II. Design Versatility:

The cage should be designed with high durability such that in worst transport condition

also, the particles of earth Enhancement Material should not leach out.

The cage with all content should be design kept in view handling condition at site

3 Supply and Erection of 25 X 3mm GI Strip in uPVC Pipe for connections (S.S. Nut

Bolts to be used for connection) Quote

1. For 2000 mm Electrode Your

Lighting Arrester to Capsule cage point no.1 Rate

Transformer neutral to capsule cage point no.2 For

Transformer structure to capsule cage point no.3 94 Per

4 Electrically insulated Enameled Paint Coating:

Uniform Paint coating on 150mm ling electrode after terminals The enameled paint coating (including

should have minimum Dielectric strength-20 Kv/mm and min. 4 coat should be applied to Schedule

the surface of electrode. Optionally, PVC cap of appropriate die-electric strength can be A (Part-

provided to prevent the flow of current in the upper portion. II))

5 Zinc coating on electrode: require Tras.

The entire primary electrode & cage shall be hot dip galvanized with at least 150 microns Charge

over all surfaces without leaving any point of the electrode un-galvanized and cage shall be

hot dip galvanized with at least 80 microns in accordance with IS 4736:1986. The process Online

of hot-dip galvanizing shall be followed as per IS: 2629. For uniform distribution of fault Only

currents, an earth electrode must be cylindrical in shape.

6 Mixture proportion for Earth enhancement Back filling Compound Confirming to IEC :

Conductive Cement 15%

Graphite carbon powder 45%

Sodium montmorillonite / Sodium 30%

Bentonite Powder

Hydrous aluminum silicate 10%

Sulphur content <2%, Content tolerance of ± 10%

Resistivity < 0.2 Ω-m, Salts contents <2%

All the components used in the mixture shall be having mesh sized between 150-200 mesh.

7 All above products and material must be as per ISI standard and ERDA test certified. The

same certificate must be submitted along with bid documents.

Method of digging Earth pit:- through Bore/auger machine Diameter = 200mm

9 The Rate should be quoted with work, supply, installation, commissioning and testing

procedure as mentioned above with specification all kind of taxes and transportation

Approximately Ten Lakhs only. (including Schedule A (Part-II))

Executive Engineer

Porbandar Rural

Paschim Gujarat Vij Company Limited

Reg. & Corporate Office “ Paschim Vij Seva Sadan”

Nana Mava Road, Laxminagar, Rajkot-360004. CIN U40102GJ2003SGC042908

Rural Division Porbandar.

Ram Tekri Road, Near Fire Brigade, Porbandar-360575.

Phone:- 0286-2244856, Fax:- 0286-2245321, e-mail [email protected]

Schedule A (Part-II) (for 3000mm Electrode)

(Technical Specification and Schedule for Providing Maintenance Free, ECO Friendly, Ready Capsule, PIPE-in-CAGE (PiC) Type

Earthing on Transformer center of 11KV Kranti AG Feeder under SKY Scheme of Bantwa Sub Division)

Sr Particulars QTY Rate per Total

No. Require On Nos Amount

Confirming to IS : 1161-2014

(A) For 3000 mm Electrode

Length (L): 2900 mm(pipe)+100mm(terminal)=3000 (min)

Outer Diameter (Ø): 48 mm (hollow) Thickness (T): 3.2 mm(min)

Weight of electrode: 10.6 (Kg) at lease. Crossing section Area: 4.53 cm2

(all tolerance will be applicable as per IS : 1161-2014)

2 Galvanized Perforated cage of Earthing:

a) 2890 mm X 150 mm for 3000 mm Electrode

b) Circular Hole size of Net : 3.5 mm Dia. Or lesser

c) Thickness of Net: 1.5 mm (min) with hot dig galvanized

V. Design Versatility:

The cage should be designed with high durability such that in worst transport condition

also, the particles of earth Enhancement Material should not leach out.

The cage with all content should be design kept in view handling condition at site

3 Supply and Erection of 25 X 3mm GI Strip in uPVC Pipe for connections (S.S. Nut Quote

Bolts to be used for connection) Your

1. For 3000 mm Electrode Rate

Lighting Arrester to Capsule cage point no.1 For

Transformer natural to capsule cage point no.2 94 Per

Transformer structure to capsule cage point no.3 Approx. QTY

4 Electrically insulated Enameled Paint Coating: Incl

Uniform Paint coating on 150mm ling electrode after terminals The enameled paint coating Or All kind (including

should have minimum Dielectric strength-20 Kv/mm and min. 4 coat should be applied to Of Schedule

the surface of electrode. Optionally, PVC cap of appropriate die-electric strength can be As Taxes A (Part-I))

provided to prevent the flow of current in the upper portion. Per And

5 Zinc coating on electrode: require Tras.

The entire primary electrode & cage shall be hot dip galvanized with at least 150 microns Charge

over all surfaces without leaving any point of the electrode un-galvanized and cage shall be

hot dip galvanized with at least 80 microns in accordance with IS 4736:1986. The process Online

of hot-dip galvanizing shall be followed as per IS: 2629. For uniform distribution of fault Only

currents, an earth electrode must be cylindrical in shape.

6 Mixture proportion for Earth enhancement Back filling Compound Confirming to IEC :

Conductive Cement 15%

Graphite carbon powder 45%

Sodium montmorillonite / Sodium 30%

Bentonite Powder

Hydrous aluminum silicate 10%

Sulphur content <2%, Content tolerance of ± 10%

Resistivity < 0.2 Ω-m, Salts contents <2%

All the components used in the mixture shall be having mesh sized between 150-200 mesh.

7 All above products and material must be as per ISI standard and ERDA test certified. The

same certificate must be submitted along with bid documents.

Method of digging Earth pit:- through Bore/auger machine Diameter = 200mm

9 The Rate should be quoted with work, supply, installation, commissioning and testing

procedure as mentioned above with specification all kind of taxes and transportation

Approximately Ten Lakhs only. (including Schedule A (Part-I))

Executive Engineer

Porbandar Rural