supply of time delay relay 110 v dc , time delay relay 110 v dc, 0.05s to 300 hrs, blinking interval 2second and used for external power supply /emergency brake of lhb type ac coaches, as per sr. no. 51 and i tem no k-01, place of installation s1k18, as per the bill of material (bom) of- rdso specifica tion no. rdso/pe/spec/ac/0184-2015(rev.1) & conforming to rdso specification no rdso/pe/spe c/ac/0184-2015(rev-1), suitable for use in lhb type ac coaches switch board cabinet. accept ed make & catalogue no.:- as per sr. no. 56 of rdso letter no. el/7.1.108/mssbc, dated i7.09.2 021, or any other rdso approved make & catalogue no. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]