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) 3