DEPOSIT-Providing Lightning arrester facilities in Standardization Section and Animal Unit Lab at IAH and VBI, Palode Thiruvananthapuram -Electrification-Providing EI-General Electrical Work

OD68227/2025-2026:SITC of main panel pluggable type surge arrester in suitable enclosure Class B / Type 1 as per IEC 61643 -11 for lightning current equipotential bonding to VDE 0185-305 (IEC 62305). The device with visual status LED indication and inbuilt common remote indication for defective arresters 3 nos of encapsulated, non-extinguishing spark gap to connect between Line and Neutral and one number arrester encapsulated, non-extinguishing spark gap type to connect between Neutral and Earth of following ratings including base element & pluggable arresters. Nominal voltage -230V 50Hz, Total Lightning Impulse Current - 150 kA (10/350µ sec) for Line to Neutral & 125 kA(10/350µ sec) for Neutral to Earth, Total Nominal discharge current- 150 kA (8/20µ sec) for Line to Neutral & 125 kA(8/20µ sec) for Neutral to Earth, Voltage protection level 1700V (L to N) & 1500V (N to E). Operating temp -40º to +85ºC. Response time < 100 nano sec with Short-circuit resistance should be 10 kA. DIN rail mounting type etc complete with back up fuse as required and as directed. The product should be tested and aproved by any one of the following external testing institute(UL, KEMA, OVE, VDE)

OD68247/2025-2026:SITC of pluggable type surge arrester for VDBs in suitable enclosure Class B+C/ Type 1+2 as per IEC 61643 -11 for lightning current equipotential bonding to VDE 0185-305 (IEC 62305). Modular connectable arrestor with dynamic cut-off unit and visual status display for each cartridge. It should be included Locking mechanism with vibration protection and voltage keying for safe operation of the device. And the remote signalling can be acheived by inbuilt potential-free changeover contact in FS version. Nominal voltage -230V 50Hz, type single MOV with built in thermal fuse and cooling gel(L to N) & spark gap encapsulated / non exhausting (N to E) . Total Lightning Impulse Current - 37.5 kA (10/350µ sec) for Line to Neutral & 50 kA(10/350µ sec) for Neutral to Earth, Total Nominal discharge current- 90 kA (8/20µ sec) for Line to Neutral & 50 kA(8/20µ sec) for Neutral to Earth, Total Max discharge current - 200 kA (8/20µ sec). Voltage protection level 1400V (L to N) & 1500V (N to E). Operating temp -40º to +80ºC. Response time <25 nano sec (L to N), < 100 nano sec (N to E) DIN rail mounting type etc complete with back up fuse as required and as directed. The product should be tested and aproved by any one of the following external testing institute(UL, KEMA, OVE, VDE)

OD68252/2025-2026:SITC of pluggable type surge arrester for LDB in suitable enclosure Class C/ Type 2 as per IEC 61643 -11 for surge voltage protection equipotential bonding to VDE 0100-443 (IEC 60364-4-44). Modular connectable arrestor with dynamic cut-off unit and visual status display for each cartridge. It should be included Locking mechanism with vibration protection and voltage keying for safe operation of the device. And the remote signalling can be acheived by inbuilt potential-free changeover contact in FS version. Nominal voltage -230V 50Hz, type single MOV with built in thermal fuse and cooling gel(L to N) & spark gap encapsulated / non exhausting (N to E) . Total Nominal discharge current- 60 kA (8/20µ sec) for Line to Neutral & 40 kA(8/20µ sec) for Neutral to Earth, Total Max discharge current - 160 kA (8/20µ sec). Voltage protection level 1400V (L to N) & (N to E). Operating temp -40º to +80ºC. Response time <25 nano sec (L to N), < 100 nano sec (N to E). DIN rail mounting type etc complete with back up fuse as required and as directed. The product should be tested and aproved by any one of the following external testing institute(UL, KEMA, OVE, VDE)

OD68235/2025-2026:"Surge protection enclosure RoHS Complied, Distribution box, 9 Division Units, Empty, Polystyrene,IP66 & IK06,UV Resistant, 400V, Dimensions:240x191x125mm”"

OD68265/2025-2026:Surge protection enclosure?RoHS Complied, Distribution box, 5 Division Units, Empty, Polystyrene,IP66 & IK06,UV Resistant 400V, Dimensions:190x150x125mm.

OD69105/2025-2026:Supplying and fixing four pole sheet steel enclosure on surface/ recess and giving connections as required

1.17.24:Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface / recessed steel/ PVC conduit as required.6 x 4 sq. mm

1.17.33:Supplying and drawing following sizes of FRLS PVC insulated copper conductor, single core cable in the existing surface / recessed steel/ PVC conduit as required.6 x 6 sq. mm

1.21.1:Supplying and fixing of following sizes of medium class PVC conduit along with accessories in surface/ recess including cutting the wall and making good the same in case of recessed conduit as required.20 mm