6
en
Emission values for sound
(Two-figure – specifications as per ISO 4871)
Extension cable.
If the use of an extension cord
is required, its length and con-
ductor cross-section must be adequate for the
application in order to prevent a voltage drop
in the extension cord, power loss and over-
heating of the power tool.
Otherwise, the
extension cable and power tool are prone to
electrical danger, and the working efficiency is
decreased.
Recommended dimensions of extension cords
at an operating voltage of 120 V – single-
phase a. c., with only KBM 50 Q, KBM 50 U,
KBM 50 auto, KBM 65 U connected:
Sound emission
KBM 50 Q
KBM 50 U
KBM 50 auto
KBM 65 U
A-weighted emission pressure
power level measured at the work-
place
L
pA
(re 20 μPa), in decibels
82.4
82.4
82.4
82.4
Measuring uncertainty
K
pA
, in deci-
bels
3
3
3
3
Measured A-weighted sound
power level
L
wA
(re 1 pW), in
decibels
93.4
93.4
93.4
93.4
Measuring uncertainty
K
wA
, in
decibels
3
3
3
3
C-weighted peak sound pressure
level measured at the workplace
L
pCpeak
, in decibels
97.0
97.0
97.0
97.0
Measuring uncertainty
K
pCpeak
, in
decibels
3
3
3
3
Mean vibrational value (core drill-
ing)
–
m/s
2
–
ft/s
2
< 2.5
8.3
< 2.5
8.3
< 2.5
8.3
< 2.5
8.3
Measuring uncertainty
K
, in
–
m/s
2
–
ft/s
2
1.5
4.9
1.5
4.9
1.5
4.9
1.5
4.9
REMARK: The sum of the measured emission value and respective measuring inaccuracy rep-
resents the upper limit of the values that can occur during measuring.
Wear hearing protection!
Measured values determined in accordance with the corresponding product standard.
WARNING
Max. cable length, ft
Max. cable length, m
≤ 100
100
–200
200
–300
≤ 30
30
– 60
60
–100
Min. conductor size
A.W.G.
Min. conductorcross-
section, mm
2
16
14
12
1.5
2.5
4
OBJ_BUCH-0000000142-002.book Page 6 Monday, November 18, 2013 11:13 AM
