Description
Hydropower plants on the Da, Dong Nai and Sesan rivers plan their outages for the dry season. In a few weeks, crews open units, inspect them and bolt everything back to spec. The Snap-on TER352AC Torqometer handles the mid-size joints in that work with a 3/4-inch drive. Its Basic dial reads 480 N·m and 350 ft-lb, and it comes with a calibration certificate.
Outage jobs for the Snap-on TER352AC Torqometer
- Guide bearing and oil cooler bolts on the generator.
- Governor, servomotor and linkage bracket bolts.
- Cooling water pump and valve flange bolts.
- Cable tray and busduct support bolts in the powerhouse.
However, the largest unit bolts often call for hydraulic tensioners. Use the TER352AC where the maker’s manual lists a torque inside its band.
TER352A figures from Snap-on
Snap-on’s Precise 1% table in catalog CAT1500i lists the TER352A with a 3/4-inch square drive. The metric scale reads to 480 N·m in 10 N·m steps. The US scale reads to 350 ft-lb in 5 ft-lb steps. Also, the body measures 29-7/8 in long and 3-1/4 in wide, and it ships in a PB39 case. Because the catalog ties the C suffix to a certificate of calibration, the TER352AC is the certified form.
Where the Precise band begins
On the TER352AC, the 1% rating holds from 20% of full scale to the top, in both directions. So the band starts at 96 N·m, or 70 ft-lb. Smaller bolts on instruments and covers therefore need a lighter TER model. Meanwhile, values close to 480 N·m leave little room, so a larger dial may suit them.
Using the TER352AC in a dim pit
Turbine pits and lower brackets are often dark and cramped. First, rig a work light so it shines on the dial face. Then plan the swing of a 30 inch body before you fit the socket. Because the Basic dial has one needle, a second person can read it while the fitter pulls. After that, the reader writes the value on the outage sheet.
Order the Snap-on TER352AC Torqometer
Lost in HCM supplies this wrench for power plant teams and contractors, and SMK Vietnam lists it. To plan it into your next outage, request a quote from Lost in HCM. You can also view more torque wrenches or contact SMK Vietnam.
Hydropower crew FAQ
Is 480 N·m enough for turbine cover bolts?
In most units, no. Large hydro bolts often use tensioners. The TER352AC suits the smaller joints the manual lists.
Does it read newton meters?
Yes. The dial shows N·m and ft-lb together.
Can damp air harm the dial?
Long exposure can. So store it in the case in a dry tool room.
Is a follow-up version made at this size?
Yes. Snap-on lists the TER352FUA in the same row, plus the TER352LA Signal model.
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