Current Inputs; Output Contacts; Status Inputs - Siemens 7SG12 DAD-N Manual

4.3 A.C Current Inputs
1 Amp and 5 Amp current inputs are both available on the rear terminal blocks for most functions except
Capacitor Unbalance.
Thermal Withstand
Continuous and Limited Period Overload
AC Current Inputs
3.0 x In
3.5 x In
4.0 x In
5.0 x In
6.0 x In
250A
625A peak
A.C. Burden
A.C. Burden
1A tap
5A tap
NB. Burdens are measured at nominal rating.

4.4 Output Contacts

Output contacts functionality is fully programmable. The basic I/O module has 5 output contacts three of which are
change over. Additional modules can be added with consequential increases in case size, to provide more
contacts. These are added in-groups of eight up to a maximum of 29
Output Contact Performance
Contact rating to IEC 60255-0-2.
5A ac or dc
Carry continuously
Make and Carry
L/R ≤ 40ms and V ≤ 300 volts)
(limit
for 0.5 sec
for 0.2 sec
Break
≤ 5A or ≤ 300 volts)
(limit
Ac resistive
Ac inductive
Dc resistive
Dc inductive
Minimum number of operations
Minimum recommended load

4.5 Status inputs

Status Inputs functionality is fully programmable. The basic I/O module has 3 status inputs these can be set to
high speed for signalling. Additional modules can be added to provide more inputs. Additional inputs are added in-
groups of eight up to a maximum of 27. A pickup timer is associated with each input and each input may be
individually inverted where necessary.
Nominal Voltage
30 / 34
48 / 54
110 / 125
220 / 250
NB: the status input operating voltage does not have to be the same as the power supply voltage.
©2010 Siemens Protection Devices Limited
7SG12 DAD N Performance Specification
Continuous
for 10 minutes
for 5 minutes
for 3 minutes
for 2 minutes
for 1 second
for 1 cycle
 0 .2 VA
 0 .3 VA
20A ac or dc
30A ac or dc
1250VA
250VA @ PF ≤ 0.4
75W
30W @ L/R ≤ 40 ms
50W @ L/R ≤ 10 ms
1000 at maximum load
0.5W, limits 10mA or 5V
Operating Range
18V to 37.5V
37.5V to 60V
87.5V to 137.5V
175 to 280V
Chapter 2 Page 5 of 7