supply procurement of male and female arm assembly ( suitable for 145 kv hbb make isolator ) for maintenance work at 220 kv s / s barahuwa under etd-ii , gorakhpur , 145 kv hbb make isolator male arm assembly with male contact sdf type 1600 amp. the male arm assembly must be type test 2000 amp. from approved lab as per relevant iss : 5561 / 1970 ( as per sample or as per drawing given by supervising engineer ) , 145 kv hbb make isolator female arm assembly with female contact sdf type 1600 amp. the female arm assembly must be type test 2000 amp. from approved lab as per relevant iss : 5561 / 1970 ( as per sample or as per drawing given by supervising engineer )