For Preventive maintenance of medium power Distribution Transformers capacity (160 KVA to 1000 KVA) on site under EWD Gonda

Amount

Load measurement of distribution transformers & arresting of Oil leakage where ever required. Opening of top cover & draining of transformer oil below LV bushing rod and replacement of following damage parts as on site &refilling of TF Oil after work completion tighting of top cover. Providing photograph before work and after work completion (Repairing material/T/F Oil shall be provided by department)

a) 160 KVA- (i) LV bushing rod 12mm brass

(ii) LV bushing M+F

(iii) Gasket set

(iv) LV Oil seal 12mm

b) 250 KVA/400KVA- (i) LV bushing rod 20mm brass

(ii) LV bushing M+F

(iii) Gasket set

(iv) LV Oil seal 20mm

c) 630 KVA- (i) LV bushing rod 30mm brass

(ii) LV bushing M+F

(iii) Gasket set

(iv) LV Oil seal 30mm

d)1000 KVA- (i) LV bushing rod 42mm brass

(ii) LV bushing M+F

(iii) Gasket set

(iv) LV Oil seal 42mm

e) 160-1000 KVA HV Porcelain bushing

f) 160-1000 KVA HV bushing rod 12mm brass

g)160-1000 KVA HV Oil seal 12mm

(i) Replacement of moist silica gel breather.

(ii) Installation of silica gel breather wherever required.

a)160 KVA-100gm

b)250/400 KVA-250gm

c)630 KVA-500gm

d)1000 KVA-1000gm

Installation of arcing horns set wherever required.

Replacement of gasket top cover cork sheet 900x600x6mm packing wherever required.

Checking of transformer oil level & Oil topup in transformer conservator tank where ever required .

Anil Kumar Yadav