supply of voltage phase control (mmr-measuring monitoring relay) , voltage phase control (mmr-measuring monitoring relay) net 1&2, 3ac, 10oov, aux volt age 110v ac/dc as per s.no,14 item code k- 01 and k-02 of annexure-d of bill of material of rdso sp ecification no. rdso/pe/sp ec/ac/o184-2015 (rev-1) suitable for switch board cabinet of lhb type ac coaches. similar dold cat no-bd9080.12/003, carlo gavazi cat no dpco1dm1kboo1, abb cat no-c m-mpn.72s, phoenix and l&t-glc cat no- smb11o make- as mentioned in rdso letter no-el/7.1.108/m ssbc dtd 17.09.2021) [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]