Bevel-helical speed reduction gearboxes B3 Z and order code Article No LP Z S B3KV-11-C

Flender/Flender Gear Units/Bevel-helical speed reduction gearboxes B3

s 5 ) Taps above nominal voltage 2 ) Taps below nominal voltage 2 ) Voltage per step variation 2.5 % 2. Painting type & Paint shade and paint thickness Polyester based powder coating, Shade RAL 7, Minimum paint thickness of 1 microns 2. Flux density at rated voltage and freq 1.5 Tesla (Max) 2. Magnetizing current 1% of rated current (Max) 2. Current density 2.5A / sqmm (Max) 2. Creepage for the epoxy bushings/ insulators 2mm/ kV corresponding to the highest system voltage applicable 2. Air clearances As per CBIP manual 2. Distance between bi-directional rollers 1 mm 3. Losses As given in this chapter. 3. Type test One transformer of each lot offered for inspection shall be type tested for impulse, load loss and temperature rise at Govt or third party NABL accredited laboratory 2.0 STANDARDS FOLLOWED 1 of 1 INDRADHANUSH GAS GRID LIMITED TECHNICAL SPECIFICATION FOR NATURAL GAS COMPRESSOR STATION FOR NORTH EAST GAS GRID PIPELINE PROJECT ______________________________________________________________________________________________ TS NO.: MEC//2UU/0/2/0 Electrical system Chapter-0.0 2, MECON Limited, All Right Reserved Pag 7 of 2 This specification is generally based on the following standard : Sl No Standard Name Description 1 IS-1 ( 1-R Specificatio for Dry Type Power Trans formers 2 IS-2, Part 1 to 4 Specificat ion for Power Transformers 3 IEC 6-1 ( Power Transformers- Part 1 Dry Type Transformers 4 IEC 6-1 ( Power Trans formers- Part 1 Loading guide for Dry Type Transformers 5 IEEE C5.1-0 ( Dry type ransformer Specification Latest version of standard applicable shall be followed during engineering. 3.0 ELECTRICAL DESIGN Insulation level for primary winding shall be designed as per the following applicable data Sl. No. Description 6.6 kV System 1. Nominal system voltage Primary winding (kV) 6.6 2. Max. system voltage (kV) 7.2 3.