Parker GVM Series - Page 15

- 15 –
18-06-08 PVD3668_GB_GVM_June_2018
Ip = Peak current
In = Nominal current for a define speed (For low speed In=Io)
tp = duration of the peak current in the cycle.
tc = duration of the cycle
Irms = Thermal equivalent current. ( Irms=√(Ip²*tp/tc) )
Tcp = Thermal time constanst of the copper.
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Example :
Motor series GVM210-400-DPW
Tcp = 39 s
Irms/In = 0.8
Ip/In = 1.4
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0
5
10
15
20
25
30
35
40
45
50
0.5 0.6 0.7 0.8 0.9 1
tp (s)
Irms/In
GVM210-400-DPW
1.2
1.4
1.6
1.8
2
Ip/In