ETC S172156400

Current and Voltage Controls
3 Phase-phase Max. and Min. Voltage Control
Types S 172, SYY 165
• Monitoring relay and 3-phased measuring relay for upper/lower phase-phase
voltages control
• Measures if all 3 phase-phase voltages are within
set limits
• Measures on own power supply
• Operates irrespective of phase sequence
• Upper and lower limits separately adjustable
• Built-in adjustable timer function
• Output: 10 A SPDT relay
• Plug-in type module
• S-housing
• LED-indication for power supply and output ON
• Power supply is the 3-phased measuring voltage
Product Description
3-phase monitoring plug-in
relay for separate upper and
lower voltage control. Often
used where the generated
electrical power is unstable
Ordering Key
(or incorrect) in order to secure the equipment. The
S 172 features built-in time
delay.
S 172 156 220
Housing
Type
Output
Power supply
Type Selection
Plug
Output
Timer
Supply: 220 VAC
Supply: 380 VAC
Supply: 400 VAC
Supply: 415 VAC
Circular
SPDT
Yes
S 172 156 220
S 172 156 380
S 172 156 400
S 172 156 415
Circular
SPDT
No
SYY 165 220
SYY 165 380
SYY 165 415
Input Specifications
Output Specifications
Input
Pins 5, 6 & 7
Measuring ranges (VAC)
Power supply (phase-phase)
Output
Rated insulation voltage
Arbitrary phase sequence
3 x 220 3 x 380 3 x 400
± 15%
± 15%
± 15%
Range
187-253 323-437 340-460
Upper level
231-253 399-437 420-460
Scale
105-115%105-115%105-115%
Lower level
187-209 323-361 340-480
Scale
85-95% 85-95% 85-95%
Power supply (phase-phase) 3 x 415
± 15%
Range
353-477
Upper level
436-477
Scale
105-115%
Lower level
353-394
Scale
85-95%
measures average value of
own supply, whereas scale
ranges are calibrated to
rms-value
Voltage interruption
≤ 40 ms
Dielectric voltage
None (supply/elect.)
Rated impulse withstand volt. 4 kV (1.2/50 µs) (line/neutral,
line/line), direct connection
to electronics
Specifications are subject to change without notice (26.10.99)
Contact ratings (AgCdO)
Resistive loads
AC 1
DC 1
or
Small inductive loads AC 15
DC 13
Mechanical life
Electrical life
AC 1
Operating frequency
Dielectric strength
Dielectric voltage
Rated impulse withstand volt.
SPDT relay
250 VAC (rms)
(cont./elect.)
µ (micro gap)
10 A/250 VAC (2500 VA)
1 A/250 VDC (250 W)
10 A/25 VDC (250 W)
2.5 A/230 VAC
5 A/24 VDC
≥ 30 x 106 operations
≥ 2.5 x 105 operations
(at max. load)
≤ 7200 operations/h
≥ 2 kVAC (rms) (cont./elect.)
4 kV (1.2/50 µs) (cont./elect.)
(IEC 60664)
1
S 172, SYY 165
Supply Specifications
General Specifications
Power supply AC types
Rated operational voltage
through pins 5, 6 & 7 220
Reaction time
Overvoltage cat. III (IEC 60664)
(IEC 60038)
3 x 220 VAC ± 15%,
45 to 65 Hz
380
3 x 380 VAC ± 15%,
45 to 65 Hz
400
3 x 400 VAC ± 15%,
45 to 65 Hz
415
3 x 415 VAC ± 15%,
45 to 65 Hz
Voltage interruption
≤ 40 ms
Dielectric voltage
None (supply/elect.)
Rated impulse withstand volt. 4 kV (1.2/50 µs) (line/neutral,
line/line), direct connection
to electronics.
Internal measuring circuit is
connected to pins 5 & 7
Rated operational power
5 VA
Accuracy
OFF delay
Time function (only S 172)
Indication for
Power supply ON
Output ON
Environment
Degree of protection
Pollution degree
τ = 1 s, worst case reaction
time may be up to 5 x τ
Adjustable delay on release
built-in (0.2 - 10 s)
Note:
Reaction time + set time
= real delay on release time
10s, -1/+3 on max.
< 0,1s on min.
Delay on release 0.2-10 s. adj.
Operating temperature
Storage temperature
Weight
Approvals
LED, green
LED, red
(IEC 60947-1)
IP 20 B (IEC 60529)
(IEC 60664)
1: S 172 380/400/415
SYY 165 380/415
2: S 172 220, SYY 165 220,
-20° to +50°C (-4° to +122°F)
-50° to +85°C (-58° to +185°F)
200 g
UL, CSA
Mode of Operation
Connected to 3 phases, the S
172 and SYY 165 measure
sinusoidal voltages. The phase
sequence is arbitrary.
lower limit, the relay releases
after the set time period
whereas SYY 165 releases
immediately.
within the upper and lower
limits. The limits are adjusted
by the two built-in potentiometers.
Undervoltage to ohmic loads
causes insufficient heating
capacity, and this can also be
monitored.
The relay operates as long as
all 3 phase-phase voltages
are within the set upper and
lower limits. The two limits
can be adjusted separately.
For S 172 applies that if one
or more of the phase-phase
voltages rises above the upper limit or drops below the
The relay operates again
when all 3 phase-phase voltage are within set limits. Hysteresis on operate is 2%.
Example 2
Monitoring load supply
The relay can protect loads,
such as heating elements,
against
overvoltage
and
thereby against increase in
current, which could otherwise destroy the heating elements.
The relay cannot be used for
load monitoring if the load is a
motor, as the regenerated
phase voltage, at e.g. fuse
breakdown, is indefinable and
dependent on the mechanical performance when the
failure occurs (see S 171).
Example 1
Mains monitoring
The relay measures if the 3
phase-phase voltage are
Time/Range Setting
Accessories
Range setting
Upper potentiometer:
Adjustment of upper limit in
%.
Middle potentiometer:
Adjustment of lower limit in
%.
Sockets◊
Hold down spring◊
Mounting rack
Socket covers
Front mounting bezel
Potentiometer lock
Time setting
Bottom potentiometer:
Time setting on relative scale
(not SYY 165).
Time
Adjustable delay on release:
0.2 to 10 s
S 411
HF
SM 13
BB 4
FRS 2
PL 2
For further information refer to "Accessories".
Hysteresis
≤2% of rms-value
2
Specifications are subject to change without notice (26.10.99)
S 172, SYY 165
Wiring Diagrams
Example 1
Example 2
S 172, SYY 165
S 172, SYY 165
Operation Diagrams
S 172
Upper limit
Hysteresis
Lower limit
Hysteresis
Relay ON
Phase L1-L2
L2-L3
L3-L1
SYY 165
Upper limit
Hysteresis
Lower limit
Hysteresis
Relay ON
Phase L1-L2
L2-L3
L3-L1
Specifications are subject to change without notice (26.10.99)
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