Brochure
Monitoring Relays
3UG Monitoring Relays for Electrical and Additional Measurements
Current monitoring
70
Siemens · 2010
■
Technical specifications
1)
Important: This is a Class A product. In the household environment this
device may cause radio interference. In this case the user must introduce
suitable measures.
2)
With protective separation.
3)
With simple separation.
3UG46 21-.AA 3UG46 21-.AW 3UG46 22-.AA 3UG46 22-.AW
General data
Rated control supply voltage U
s
V 24 24 … 240 24 24 … 240
Rated frequency Hz
50/60
Operating range V
20.4 ... 26.4 20.4 ... 264 20.4 ... 26.4 20.4 ... 264
Rated power W/VA
2/4
Width mm
22.5
RESET
Automatic/manual
Availability time after application of U
s
ms 1000
Response time once a switching threshold is reached ms
Max. 450
Adjustable tripping delay time/ON-delay time s
0.1 … 20
Mains buffering time, minimum ms
10
Rated insulation voltage U
i
Degree of pollution 3; overvoltage category III acc. to IEC 60664
V
690
Rated impulse withstand voltage U
imp
kV 6
Protective separation acc. to IEC 60947-1, Annex N V
300
Permissible ambient temperature
• During operation °C -25 … +60
• During storage °C
-40 … +85
EMC tests
1)
IEC 60947-5-1/IEC 61000-6-2/IEC 61000-6-4
Degree of protection acc. to IEC 60529
IP40 Enclosure
IP20 Terminals
Mounting position
Any
Vibration resistance acc. to IEC 60068-2-6
1 ... 6 Hz: 15 mm; 6 ... 500 Hz: 2 g
Shock resistance acc. to IEC 60068-2-27 for half-sine shock type g/ms
15/11
Connection type
Screw terminals
• Terminal screw
M 3 (standard screwdriver, size 2 and Pozidriv 2)
• Solid mm
2
1 x (0.5 ... 4)/2 x (0.5 ... 2.5)
• Finely stranded with end sleeve mm
2
1 x (0.5 ... 2.5)/2 x (0.5 ... 1.5)
• AWG cables, solid or stranded AWG
2 x (20 ... 14)
• Tightening torque Nm
0.8 … 1.2
Connection type
Spring-type terminals
• Solid mm
2
2 x (0.25 ... 1.5)
• Finely stranded, with end sleeves mm
2
2 x (0.25 ... 1.5)
• Finely stranded mm
2
2 x (0.25 ... 1.5)
• AWG cables, solid or stranded AWG
2 x (24 ... 16)
Measuring circuit
Measuring range for single-phase AC/DC current A 0.003 … 0.6 0.05 … 15
Setting range for single-phase current A
0.003 ... 0.5 0.05 ... 10
Load supply voltage V
24 Max. 300
2)
Max. 500
3)
24 Max. 300
2)
Max. 500
3)
Measuring accuracy % 5
Repeat accuracy at constant parameters %
1
Accuracy of digital display
±1 digit
Deviations for temperature fluctuations %/°C
±0.1
Hysteresis for single-phase current
0.1 ... 250 mA 0.01 ... 5 A
Permissible overcurrent, continuous A
0.6 15
Permissible overcurrent, < 1 s A
5 50
Protection against destruction, DIAZED gL/gG A
2 16
Measuring circuit internal resistance, shunt mΩ
500 5
Control circuit
Load capacity of the output relay
• Conventional thermal current I
th
A 5
Rated operational current I
e
• AC-15 at 24 ... 400 V A 3
• DC-13 at 24 V A
1
• DC-13 at 125 V A
0.2
• DC-13 at 250 V A
0.1
Minimum contact load at 17 V DC mA
5
Output relay with DIAZED fuse gL/gG A
4
Electrical endurance AC-15, 3 A, million operating cycles
0.1
Endurance with contactor relay million operating cycles
10