Technical data
12.5 Derating factors
3VL molded-case circuit breakers
System Manual, 03/2009, 110 0110 - 02 DS 01
165
Plug-in or withdrawable version:
Table 12- 26 Derating factors for electronic trip units (plug-in or withdrawable version)
Trip unit
Thermomagnetic TM
Coefficient
at
Circuit
breaker
From [A]
To [A]
40 °C
50 °C
60 °C
70 °C
VL160
63
125
100
160
1
1
1
0,9
1
0,9
1
0,9
VL250
200
250
1
0,9
0,9
0,9
VL400
315
400
1
0,9
0,9
0,9
VL630
630
1
0,85
0,85
0,85
VL800
800
1
0,9
0,9
0,9
VL1250
1000
1250
1
0,95
0,95
0,95
VL1600
1600
1
0,8
0,8
0,8
Example for VL250:
●
I
n
= 250 A at 50 °C
●
Ambient temperature = 60 °C
●
I
n
= 250 x 0.95 = 237 A for fixed-mounted version
●
I
n
= 250 x 0.95 x 0.9 = 213 A for plug-in version
●
Set I
R
to the next possible value
●
I
R
= 0.95 In for fixed-mounted version
●
I
R
= 0.8 In for plug-in version
Содержание SENTRON 3VL series
Страница 2: ......
Страница 10: ...Table of contents 3VL molded case circuit breakers 10 System Manual 03 2009 110 0110 02 DS 01 ...
Страница 40: ...System overview 4 2 Key data 3VL molded case circuit breakers 40 System Manual 03 2009 110 0110 02 DS 01 ...
Страница 350: ...Correction sheet 3VL molded case circuit breakers 350 System Manual 03 2009 110 0110 02 DS 01 ...
Страница 358: ...Glossary 3VL molded case circuit breakers 358 System Manual 03 2009 110 0110 02 DS 01 ...
Страница 359: ......