Have a question about time required to swap a "typical" 60-120 cell, 150 lb./cell substation battery. Haven't had to estimate these before.
NECA Manual of Labor Units gives an estimate of around 3.5-5.5 hours "each" for this work and includes unloading/staging, placement, connecting everything, and teardown/cleanup/disposal.
For a 120 cell string @ say 4 hours, that comes up to 480 man-hours or 6 man-weeks which frankly seems very, very excessive. But if I go the other way and figure that "each" means per battery and not per cell then we must be talking about an extremely small UPS battery such as the larger ones that come with a separate cabinet and not a utility substation battery because at say 4 hours or 240 minutes, that gives a total of just 4 minutes per cell to do everything for a 125 VDC typical switchgear battery (60 cells), which doesn't even seem like enough time to unload and stage the old ones and to place, strap, and load the old ones on a truck.
NECA Manual of Labor Units gives an estimate of around 3.5-5.5 hours "each" for this work and includes unloading/staging, placement, connecting everything, and teardown/cleanup/disposal.
For a 120 cell string @ say 4 hours, that comes up to 480 man-hours or 6 man-weeks which frankly seems very, very excessive. But if I go the other way and figure that "each" means per battery and not per cell then we must be talking about an extremely small UPS battery such as the larger ones that come with a separate cabinet and not a utility substation battery because at say 4 hours or 240 minutes, that gives a total of just 4 minutes per cell to do everything for a 125 VDC typical switchgear battery (60 cells), which doesn't even seem like enough time to unload and stage the old ones and to place, strap, and load the old ones on a truck.
