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Moeller Wiring Manual > Standards, formulae, tables > Standard international units > Physical units
Standards, formulae, tables
Standard international units

Physical units [t-head1-pg]

Obsolete units

Mechanical force [t-head3]

SI unit:
     
N (Newton) J/m (Joule/m)
       
Previous unit:
 
 
 
kp (kilopond) dyn (Dyn)
 
 
 
 
1 N
 
= 1 J/m
 
= 1 kg m/s2
 
= 0.102 kp
 
= 105 dyn
1 J/m
= 1 N
= 1 kg m/s2
= 0.102 kp
= 105 dyn
1 kg m/s2
= 1 N
= 1 J/m
= 0.102 kp
= 105 dyn
1 kp
= 9.81 N
= 9.81 J/m
= 9.81 kg m/s2
= 0.981 106 dyn
1 dyn
= 10–5 N
= 10–5 J/m
= 10–5 kg m/s2
= 1,02 10–5 kp

Pressure [t-head3]

SI unit:
     
Pa (Pascal) bar (Bar)
       
Previous unit:
 
 
 
at = kp/cm2 = 10 m Ws
Torr = mm Hg
atm
 
 
1 Pa
 
= 1 N/m2
 
= 10–5 bar
1 Pa
= 10–5 bar
= 10,2  ·  10–6 at
 
= 9,87 · 10–6 at
 
= 7,5  ·  10–3 Torr
1 bar
= 105 Pa
= 1.02 at
= 0.987 at
= 750 Torr
1 at
= 98.1  ·  103 Pa
= 0.981 bar
= 0.968 at
= 736 Torr
1 atm
= 101.3  ·  103 Pa
= 1.013 bar
= 1.033 at
= 760 Torr
1 Torr
= 133.3 Pa
= 1.333  ·  10–3 bar
= 1.359  ·  10–3 at
= 1.316  ·  10–3 atm

Work [t-head3]

SI unit:
 
J (Joule)
Nm (Newtonmeter)
SI unit:
(as before)
 
Ws (Wattsecond)
kWh (Kilowatthour)
Previous unit:
 
 
 
kcal (Kilocalorie) = cal  ·  10–3
1 Ws
 
= 1 J
 
= 1 Nm
 
107 erg
       
1 Ws
= 278  ·  10–9 kWh
= 1 Nm
= 1 J
= 0.102 kpm
= 0.239 cal
1 kWh
= 3.6  ·  106 Ws
= 3.6  · 106 Nm
= 3.6  ·  106 J
= 367  ·  106 kpm
= 860 kcal
1 Nm
= 1 Ws
= 278  · 10–9 kWh
= 1 J
= 0.102 kpm
= 0.239 cal
1 J
= 1 Ws
= 278  · 10–9 kWh
= 1 Nm
= 0.102 kpm
= 0.239 cal
1 kpm
= 9.81 Ws
= 272  · 10–6 kWh
= 9.81 Nm
= 9.81 J
= 2.34 cal
1 kcal
= 4.19  ·  103 Ws
= 1.16  · 10–3 kWh
= 4.19  ·  103 Nm
= 4.19  ·  103 J
= 427 kpm

Power [t-head3]

SI unit:
 
Nm/s (Newtonmetre/s)
J/s (Joule/s)
SI unit:
(as before)
 
W (Watt)
kW (Kilowatt)
Previous unit:
 
kcal/s (Kilocalorie/sec.) = cal/s  ·  103
 
kcal/h (Kilocalorie/hour.) = cal/h  ·  106
 
kpm/s (Kilopondmetre/Sec.)
 
PS (metric horsepower)
1 W
 
= 1 J/s
 
= 1 Nm/s
1 W
= 10–3 kW
= 0.102 kpm/s
 
= 1.36  · 10–3 PS
 
= 860 cal/h
 
= 0.239 cal/s
1 kW
= 103 W
= 102 kpm/s
= 1.36 PS
= 860  · 103 cal/h
= 239 cal/s
1 kpm/s
= 9.81 W
= 9.81  · 10–3 kW
= 13.3  · 10–3 PS
= 8.43  · 103 cal/h
= 2.34 cal/s
1 PS
= 736 W
= 0.736 kW
= 75 kpm/s
= 632  · 103 cal/h
= 176 cal/s
1 kcal/h
= 1.16 W
= 1.16  · 10–3 kW
= 119  · 10–3 kpm/s
= 1.58  · 10–3 PS
= 277.8  ·  10–3 cal/s
1 cal/s
= 4.19 W
= 4.19  · 10–3 kW
= 0.427 kpm/s
= 5.69  · 10–3 PS
= 3.6 kcal/h

Magnetic field strength [t-head3]

SI unit:
 

Previous unit:
 
Oe = (Oerstedt)

 
 
= 0.01256 Oe

= 12.56 Oe
1 Oe

Magnetic field strength [t-head3]

SI unit
 
Wb (Weber)
µWb (Microweber)
Previous unit:
 
M = Maxwell
1 Wb
 
= 1 Tm2
1 Wb
= 106 µWb
 
= 108 M
1 µWb
= 10–6 Wb
= 100 M
1 M
= 10–8 Wb
= 0.01 µWb

Magnetic flux density [t-head3]

SI unit:
 
T (Tesla)
mT (Millitesla)
Previous unit:
 
G = Gauss
1 T
 
= 1 Wb/m2
1 T
= 103 mT
 
= 104 G
1 mT
= 10–3 T
= 10 G
1 G
= 0,1–3 T
= 0,1 mT
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