Siemens SIPROTEC 7SJ62 Instruction Manual

Technical Data
10-30 7SJ62 Manual
C53000-G1140-C121-1
10.11 Start Inhibit for Motors (66/68)
Setting Ranges /
Resolutions
Starting Current I
Start
/I
Motor nom
3.0 to 10.0 (Increments 0.1)
Relative to Nominal Motor Current
Nominal Motor Current I
Motor nom
1.0 A to 6.0 A
1
) (Increments 0.5 A)
1
)
Maximum Permissible T
Start Max
3 s to 120 s (Increments 1 s)
Starting Time
Temperature T
Equal
0.0 min to 60.0 min (Increments 0.1 min)
Equalization Time
Maximum Permissible n
warm
1 to 4 (Increments 1)
Number of Warm Starts
Difference between n
cold
- n
warm
1 to 2 (Increments 1)
Cold and Warm Starts
Extension K-Factor for kτ-Factor 1 to 10 (Increments 1)
Cooling Simulations of
Rotor at Rest
Restarting Limit
Where:
1
) For I
N
= 1 A, divide all limits by 5.
Θ
RESTART
Θ
Rot.max.perm
n
COLD
1
–
n
COLD
---------------------------
⋅
=
Θ
Restart
Temperature limit below
which restarting is possible
Θ
Rot.max.perm
maximum permissible motor
over-temperature (= 100 % in
operating measured value
Θ
Rot
/Θ
Rot trip
)
n
Cold
Number of permissible
restarts from cold state
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Siemens SIPROTEC 7SJ62 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SJ62
Category	Relays
Language	English