4.14 Thermal Overload Protection 49
490
SIPROTEC 4, 7SJ62/63/64 Handbuch
C53000-G1140-C147-A, Edition 07.2015
4.14
Thermal Overload Protection 49
Setting Ranges / Increments
Trip Characteristic
Dropout Ratios
Tolerances
K-Factor per IEC 60255-8
0.10 to 4.00
Increments 0.01
Time Constant
τ
th
1.0 min to 999.9 min
Increments 0.1 min
Thermal Alarm
Θ
Alarm
/
Θ
Trip
50% to 100% of the trip ex-
cessive temperature
Increments 1 %
Current Overload
I
Alarm
for
I
Nom
=
1 A
0.10 A to 4.00 A
Increments 0.01 A
for
I
Nom
=
5 A
0.50 A to 20.00 A
Extension k
τ
Factor when Machine
Stopped
1.0 to 10.0 relative to the
time constant for the
machine running
Increments 0.1
Emergency Time T
Emergency
10 s to 15000 s
Increments 1 s
Nominal Overtemperature (for
I
Nom
)
40
°
C to 200
°
C = –13
°
F to
+185
°
F
Increments 1
°
C
Θ
/
Θ
Trip
Θ
/
Θ
Alarm
I
/
I
Alarm
Drops out with
Θ
Alarm
Approx. 0.99
Approx. 0.97
Referring to k ·
I
Nom
Referring to Trip Time
2 % or 10 mA for
I
Nom
= 1 A, or 50 mA for
I
Nom
=
5 A,
2 % class according to IEC 60255-8
3 % or 1 s for
I
/(k ·
I
Nom
) > 1.25;
3 % class according to IEC 60255-8
Содержание siprotec SJ62
Страница 3: ...3 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 9: ...Preface 9 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 21: ...Contents 19 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 35: ...1 Introduction 33 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 365: ...2 Functions 363 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 443: ...3 Mounting and Commissioning 441 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 529: ...4 Technical Data 527 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 699: ...A Appendix 697 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 701: ...Literature 699 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 714: ...Index 712 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...
Страница 715: ...Index 713 SIPROTEC 4 7SJ62 63 64 Handbuch C53000 G1140 C147 A Edition 07 2015 ...