I'm surpised at your current readings. My ammeter (150A max
hall effect
probe) usually runs around 30-40 A in flat mowing (traction
motor and
mower motors combined). I've never seen it run over 60 A or
so total.
Here the measurements I took this evening with my inductive Ammeter
attached to the wire going to the battery. The readings are fairly
rough numbers:
Driving on level asphalt road:
L, Speed 4 25 A
L, Speed 8 35 A
D1, Speed 4 35 A
D1, Speed 8 90 A
D2, Speed 4 50 A
D2, Speed 8 100 A
Mower motors with deck off ground, traction motor not engaged: 25A
Mowing on level ground :
L, Speed 4 50 A (up to 75 A if there is an incline)
L, Speed 8 80 A (up to 100 A on an incline)
D1, Speed 4 75 A
D1, Speed 8 120 A
This shows that mowing in L consumes a bit more power in Speed 8 than in
D1,
Speed 4
BUT if one has to go slower then using the L speeds is much better.
Start on almost level asphalt road with max. accelleration:
L = briefly exceeding 400A, then quickly going down to 35A as the tractor
gets up to speed
D1 = briefly exceeding 400A, then quickly going down to 90A as the tractor
gets up to speed
D2 = briefly exceeding 400A, then after a moment I can here the current
limitting turning of the field weakening, holding amperage for a second at
300A, then decreasing to 100 A
as the tractor gets up to speed
I hope you find these numbers interesting
Markus