Tender For custom bid for services - rprc255079 annual maintenance contract for hitachi make plcc at pr 220 kv grid item no10 deputation of service engineer-1. carrier signal communication troubleshooting at both panipat and mundh substation end. 2. faulty card replacement with new one and it s testing. 3. all testing instruments will be in scope of m/s hitachi. 4. distance protection testing at both end by checking send and receive of carrier signals . 5. pm and cleaning of plcc cabinet at both panipat & mundh end..