Siemens SENTRON VL Series System Manual page 30

3WL air circuit breakers
3.1 Introduction and overview
Basic function
Recording of the ground-fault current
via summation current conversion
with internal or external N-conductor
transformer
NSE00889
Recording of the ground-fault current
via external transformer
Adjustment range of the response
current I
Adjustment range of the response
current I
Adjustment range of the delay time t
Switchable ground-fault protection
(I t-dependent function)
2
Adjustment range delay time t
at I t
2
ZSI-G function
Switchable
LCD alphanumeric (4-line)
LCD graphical
CubicleBUS integrated
Communications capability via
PROFIBUS DP
Metering function capability with
metering function PLUS
Overcurrent release active
Alarm
ETU fault
NSE00890
L tripping operation
S tripping operation
I tripping operation
N tripping operation
G tripping operation
G alarm
Tripping operation as a result of
extended protection function
Communication
30
for tripping
g
for alarm
g
g
ETU45B
✓
✓
A-B-C-D-E
A-B-C-D-E
100-200-300-400-500 ms
g
✓
100-200-300-400-500 ms
Per CubicleBUS module
–
Optional
–
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓ (only with ground-fault
protection module)
✓ (only with ground-fault
protection module)
✓
✓
3WL/3VL circuit breakers with communication capability - PROFIBUS
ETU76B
✓
✓
A...E*
A...E*
100...500 ms
✓
100...500 ms
Per CubicleBUS module
✓
–
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓ (only with ground-fault
protection module)
✓ (only with ground-fault
protection module)
✓
✓
System Manual, 03/2011, A5E01051353-02