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BETA Monitoring
Monitoring of Electrical Values
5
TT6 current relays
13/11
Siemens ET B1 · 10/2008
13
*
You can order this quantity or a multiple thereof.
■
Overview
Current relays monitor single and three-phase systems for the
flow of current in emergency lighting installations and the load of
motors. They are available as undercurrent, overcurrent and
under/overcurrent relays.
■
Benefits
•
Devices with an extremely broad range of applications of
minimum 0.1 to maximum 15 A without transformer
•
Permanent overload capability up to 20 or 30 A may, for up to
3
seconds, protect the function against uncontrolled plant
states and increase plant availability
•
Range changing enables the precise setting of current values
through a high resolution
•
Ultra compact current relays require only the smallest of spaces
and save costs
■
Technical specifications
5
TT6 111
5
TT6 112
Standards
IEC 60255; DIN VDE 0435-303
Rated control current
I
c
A
1 ... 10
Rated control voltage U
c
V AC 230
Operating range
× U
c
0.9 ... 1.1
Overload capability, continuous
A
15
Overload capability, short-time
At 50 °C ambient
temperature max. 3 s
A
20
Rated frequency
Hz
50/60
Response values
Switching on infinitely variable,
switching off non-adjustable
×
I
c
0.1 ... 1
4 %
hysteresis
Switching delay t
v
Infinitely adjustable
s
0.1 ... 20
Response time
Non-adjustable
ms
Current corresponds to the rated operational power of the continu-
ous-flow heater
Minimum contact load
V; mA 10; 100
Rated insulation voltage U
i
Between coil/contact
kV
2.5
Contacts
contact (AC-15)
NO contacts
A
3
NC contacts
A
1
Electrical isolation
Creepage distances and
mm 3
actuator/contact
Rated impulse withstand voltage U
imp
Actuator/contact
kV
> 4
Terminals
±
screw (Pozidriv)
1
Conductor cross-sections
Rigid
max. mm
2
2
× 2.5
Flexible, with end sleeve min. mm
2
1
× 0.5
Permissible ambient temperature
°C
-20 ...
+60
Resistance to climate
Acc. to EN 60068-1
20/60/4
5
TT6 113
5
TT6 114
5
TT6 115
5
TT6 120
Standards
IEC 60255; DIN VDE 0435-303
Rated control current
I
c
4
ranges
1
range
A
0.1 ... 1
0.5 ... 5
A
0.5 ... 5
A
1 ... 10
A
1.5 ... 15
Rated control voltage U
c
V AC 230
Operating range
× U
c
0.9 ... 1.1
Overload capability, continuous
A
20
15
Overload capability independent of
measuring range
A
30
Max. 3 s
Rated frequency
Hz
50/60
Response values
Switching on infinitely variable,
switching off non-adjustable
×
I
c
1 ... 10
4 %
hysteresis
Switching delay t
v
Infinitely adjustable
s
0.1 ... 20
Response time
Non-adjustable
ms
See page 13/15
Minimum contact load
V; mA 10; 100
Rated insulation voltage U
i
Between coil/contact
kV
2.5
Contacts
contact (AC-15)
NO contacts
A
5
NC contacts
A
1
Electrical isolation
Creepage distances and
mm 3
actuator/contact
Rated impulse withstand voltage U
imp
Actuator/contact
kV
> 4
Terminals
±
screw (Pozidriv)
1
Conductor cross-sections
Rigid
max. mm
2
2
× 2.5
Flexible, with end sleeve min. mm
2
1
× 0.5
Permissible ambient temperature
°C
-20 ...
+60
Resistance to climate
Acc. to EN 60068-1
20/60/4
© Siemens AG 2008