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VBS TBS KTS BSS TBS. Surge protection systems Order information and technical data Measurement and control system protection Product information – measurement and control systems Selection guide for measurement and control system protection Lightning barriers Lightning barriers and lightning arrester LSA-Plus technology LFS UFS Protection of measurement and control installations Measurement and control installations are used in numerous applications, for example production firms, building management, heating systems, alarm installations, and so on. Coupled-in overvoltages due to lightning and other causes pose a danger not only to control installations but also to costly transducers and sensors. A fault in a control system usually leads to lost production and costly restarting processes. Measurement and control units usually react more sensitively to surges than power supply systems. The following factors must be considered when choosing and installing surge arresters. 1. Maximum voltage of the system The rated voltage and type of voltage (AC/DC) of the protection device must agree with the system data. 3. Maximum data rate The maximum bandwidth of FRD protection devices is around 20 kHz, and of FLD devices 10 kHz. 5. Do the lines come from outside the building and does the building have an external lightning protection installation? If the data lines enter the building from outside and if the building is protected by a lightning protection installation, a basic protection device must be installed where the data lines enter the building. 2. Maximum current FRD devices can only be used up to a maximum rated current of 0.2 A. FLD devices can be used up to 1 A. 90 4. Are increased resistances permitted? Lightning barriers FRD have an internal 15 ohm series resistor for decoupling. In low-resistance systems this may cause problems. Measurement and control installations: The road to perfect surge protection Object to be protected 䊳 䊳 䊳 Rated current from 1 A to 16 A e.g. for power supply systems Rated current less than 1 A e.g. for data transmission or measuring circuits Alternating voltage? Multi-core systems from ten twin-cores What is the maximum data rate? <20kHz <10kHz YES Measurement and control installations Large telecommunication installations Multi-core data lines <150 MHz Is increased resistance permitted in the power branch? (Rated current <200 mA) NO YES NO Note: Basic protection device VF ...AC VF ...DC FLD FRD TKS-B LSA-Plus Use: Power supply EIB, control, etc. Use: SPS Use: 0 (4) – 20 mA current loop Use: Bus transmission of EIB, transducers Use: Lightning arrester for control lines Use: Large telecoms installations, multi-core data lines page 92 page 92 page 94 page 94 page 94 page 96 See the table on page 92 for further suggestions. 91 M&C system protection Lightning barriers OBO VF and VF-FS Operation and fields of application Lightning barriers VF and VF-FS are used as precision protection devices in power supplies for computer installations, modems, ripple control installations, etc., to protect them from surges that may be caused by atmospheric discharges (storms) or switching operations. The built-in protection circuit, which is made up of gas discharge tubes and varistors, is permanently monitored by a temperature cutout. A green LED indicates that it is ready to operate. If the protection circuit is overloaded, an integral isolating device isolates the circuit and the green LED goes out. In the version with remote signalling, a floating changeover contact also operates. 1 3 ϑ V PE PE F V 2 4 Block diagram of VF Mounting VF devices are mounted on a 35 mm top-hat rail inside the distribution box or switchgear cabinet. The remote signalling circuit is connected by means of a plug (supplied). Advantages in use Mounting on 35 mm top-hat rail Direct installation in distribution board housing or switchgear cabinet Available with remote signalling (VF ...-FS) Permanent check of the varistors in switchgear with poor access Screwless clamp terminals Easy to install Y circuit Safety from transient surges on the phase, neutral or protective earth wire 92 Please always state the order number when ordering. TBS_GB_V0_15072002 Features at a glance VF Technical data Lightning barrier VF AC Nominal voltage UN Maximum continuous operating voltage Uc LPZ Requirement class to DIN VDE 0675, Part 6 (Draft 11.89) A1, A2 to IEC 61643-1 Rated load current Nominal discharge current Maximum discharge current Voltage protection level Up IL In (8/20) Imax (8/20) In Up L-N Imax Up L-N Response time tA IL In (8/20) Imax (8/20) In Up L-N Imax Up L-N Response time tA 48 V~ 60 V~ 60 V~ 80 V~ 2->3 D class III ≤160 V ≤220 V 700 A 2000 A ≤220 V ≤300 V 110 V~ 150 V~ 230 V~ 255 V~ 2000 A 6500 A ≤530 V ≤850 V 2500 A 7000 A ≤1060 V ≤1500 V 16 A ≤360 V ≤480 V ≤ 25 ns Lightning barrier VF DC Nominal voltage UN Maximum continuous operating voltage Uc LPZ Requirement class to DIN VDE 0675, Part 6 (Draft 11.89) A1, A2 to IEC 61643-1 Rated load current Nominal discharge current Maximum discharge current Voltage protection level Up 24 V~ 34 V~ 12 V18 V- 24 V36 V- 48 V76 V- 60 V90 V2->3 D class III 110 V170 V- ≤70 V ≤100 V 16 A 700 A 2000 A ≤130 V ≤240 V ≤280 V ≤170 V ≤300 V ≤350 V 230 V300 V- 2000 A 6500 A ≤500 V ≤820 V ≤800 V ≤1020 V ≤25 ns Lightning barrier VF AC/DC Connection cross-section single-stranded, multi-stranded, fine-stranded with core end sleeve, pin cable lug, crimp sleeve Stripping length for connecting cables Colour Material Mounting Dimensions 0.14-2.5 mm2 6-7 mm Light grey, similar to RAL 7035 Polyamide 6 Snap-fitting on 35 mm top-hat rail to DIN EN 50022 Width 17.8 mm-depth 55.0 mm Remote signalling, lightning barrier VF AC/DC-FS Max. switching voltage Umax. Max. switching current Imax. Max. switching power Pmax. Connection cross-section, flexible or rigid Signal contact NO (make) NC (break) 250 V~, 220 V2A 125 VA, 60 W 0.14-1.5 mm2 1-2 1-3 Other voltages on request. Subject to technical alterations Ordering data TBS_GB_V0_15072002 Description Order no. VF 24-AC VF 48-AC VF 60-AC VF 110-AC VF 230-AC Alternating current Alternating current Alternating current Alternating current Alternating current VF 12-DC VF 24-DC VF 48-DC VF 60-DC VF 110-DC VF 230-DC Direct Direct Direct Direct Direct Direct VF 24-AC-FS VF 230-AC-FS Alternating current systems; 24 V with FS* 5097 81 9 Alternating current systems; 230 V with FS* 5097 85 1 current current current current current current systems; systems; systems; systems; systems; systems; systems; systems; systems; systems; systems; 24 V version 48 V version 60 V version 110 V version 230 V version 12 V version 24 V version 48 V version 60 V version 110 V version 230 V version 5097 60 6 5097 61 4 5097 62 2 5097 63 0 5097 64 9 90 Type 62 17.5 5097 45 2 5097 46 0 5097 47 9 5097 48 7 5097 49 5 5097 50 9 * FS = remote signalling Please always state the order number when ordering. 93 M&C system protection Lightning barriers FRD, FLD and lightning arrester TKS-B OBO lightning barriers are also suitable for installation at zone interface 1 to 3. The two-stage circuit of FRD and FLD devices, consisting of gas discharge tube, varistors and Transzorb diodes, features high discharge capacity, short clamping time and a low protection level. The single-stage protective circuit of TKS-B devices ensures a very high discharge capacity. 1 3 V F PE L V D PE V L 2 4 Block diagram of FLD Lightning barriers TKS-B, FRD, FLD, FRD 2 and FLD 2 protect electronic measurement and control installations from surges due to atmospheric discharges (storms) or in the form of travelling waves on data lines. Arrester TKS-B is used as a lightning arrester (LPZ 0->2) for data lines of all kinds (max. 110 V, 2 MHz). Lightning barriers of series FRD and FLD are designed for use in non-earthed (asymmetrical, floating) two-wire systems. The FRD version can be used in installations where an increase in resistance is permitted. If the resistance must not be increased, version FLD is used. Lightning barriers of series FRD 2 and FLD 2 are intended for use in single-wire earth-related systems (symmetrical, potential-related). Here too, a choice can be made between series resistance and series inductance. If the resistance can be increased, version FRD 2 is used, and with a voltage-controlled installation, type FLD 2. With their two-stage design, Features at a glance FRD, FLD 1 3 PE PE 2 4 Block diagram of TKS-B 1 3 R V F PE V D PE R D 2 4 Block diagram of FRD 2 Mounting OBO lightning barriers can be installed in any standard switchgear cabinet or distribution box, simply by snap-fitting to a 35 mm top-hat rail. Screwless terminals keep installation costs low. Advantages in use Mounting on 35 mm top-hat rail Direct installation in distribution board housing or switchgear cabinet Special voltages can be provided for without difficulty User-oriented surge protection design is possible Screwless clamp terminals Easy to install Y circuit Safety from transient surges on the phase, neutral or protective earth wire 94 Please always state the order number when ordering. TBS_GB_V0_15072002 Operation and fields of application Technical data FRD 5 FLD 5 FRD 2-5 FLD 2-5 Lightning barriers FRD 12 FLD 12 FRD 2-12 FLD 2-12 FRD 24 FLD 24 FRD 2-24 FLD 2-24 LPZ FRD 48 FLD 48 FRD 2-48 FLD 2-48 FRD 60 FLD 60 FRD 2-60 FLD 2-60 FRD 110 FLD 110 FRD 2-110 FLD 2-110 1→3 TKS-B 0→2 Nominal voltage UN 5V 12 V 24 V 48 V 60 V 110 V 110 V Max. continuous operating voltage Uc 6V 13.5 V 27 V 53 V 66 V 122 V 130 V Rated load current FRD, FRD 2, TKS-B IL 0.2 A 16 A Rated load current FLD, FLD 2 IL 1.0 A - Nominal discharge current (8/20) In 10 kA 20 kA Impulse current 10/350 Iimp - 6 kA Voltage protection level Up Up 3-4 Series resistance per path R FRD, FRD 2-... ≤13 V ≤29 V 15 Ω - Series inductance per path L FLD, FLD 2-... 100 µH - Connection cross-section single-stranded, multi-stranded, fine-stranded with core end sleeve, pin cable lug, crimp sleeve ≤51 V ≤100 V ≤130 V ≤300 V ≤450 V 0.14-2.5 mm2 Stripping length for connecting cables 6-7 mm Colour Light grey, similar to RAL 7035 Material Polyamide 6 Mounting Snap-fitting on 35 mm top-hat rail to DIN EN 50022 Dimensions Width 17.8 mm, depth 55.0 mm Subject to technical alterations Ordering data Description Order no. 5 V version 12 V version 24 V version 48 V version 60 V version 110 V version 5098 49 1 5098 50 5 5098 51 3 5098 52 1 5098 54 8 5098 55 6 FLD 5 FLD 12 FLD 24 FLD 48 FLD 60 FLD 110 5 V version 12 V version 24 V version 48 V version 60 V version 110 V version 5098 59 9 5098 60 2 5098 61 0 5098 62 9 5098 63 7 5098 64 5 FRD 2- 5 FRD 2- 12 FRD 2- 24 FRD 2- 48 FRD 2- 60 FRD 2-110 5 V version 12 V version 24 V version 48 V version 60 V version 110 V version 5098 79 3 5098 71 8 5098 72 6 5098 73 4 5098 74 2 5098 75 0 FLD 2- 5 FLD 2- 12 FLD 2- 24 FLD 2- 48 FLD 2- 60 FLD 2-110 5 V version 12 V version 24 V version 48 V version 60 V version 110 V version 5098 86 6 5098 80 7 5098 81 5 5098 82 3 5098 83 1 5098 85 8 TKS-B Single-stage basic protection 5097 97 5 TBS_GB_V0_15072002 FRD 5 FRD 12 FRD 24 FRD 48 FRD 60 FRD 110 Please always state the order number when ordering. 90 Type 17.5 62 95 M&C system protection LSA-Plus technology Operation and fields of application Mounting The LSA connection or isolating strips are fixed simply by snap-fitting to a mounting tray. This means that they can be mounted on almost any wall. PTC GDA Diodes Fail--safe Fail--safe PTC Block diagram of LSA-BF... a1 .. .a10 GDA b1 .. .b10 a1’ .. .a10’ b1’ .. .b10’ Block diagram of LSA-B-MAG Using the LSA-Plus tool, the wires can be connected without cutting, and without solder, screws and stripping. LSA-Plus features at a glance Advantages in use LSA-Plus technology Simple solderless, screwless connections with no need to strip the insulation Compact design Space-saving protection of multi-wire systems Fail-safe technology Protection from thermal overloading Individual surge protection The modules allow certain wiring branches to be protected Modular design Allows simple, professional mounting 96 Please always state the order number when ordering. TBS_GB_V0_15072002 LSA-Plus surge protection from OBO is used especially with multi-wire systems such as those to be found, for example, in measurement and control engineering and in telephone exchanges. For example, ten two-wire (TC) systems can be protected with only one surge protection (basic protection) magazine LSA-B-MAG. Modules LSA-BF provide one twin-core protection of two lines. The basic and precision protection devices of type LSA-BF 180 (180 V version) are intended for use in telephone exchanges in analog and ISDN networks. OBO basic and precision protection devices LSA-BF-24 (24 V version) are used especially in computer systems and measurement and control engineering. The protection circuit of the LSA-Plus devices consists of powerful triple-pole gas discharge arresters. Basic and precision protection are based on fail-safe technology, ensuring that, in the event of a thermal overload, the arrester is bridged and therefore protected. Technical data Type LSA-B-MAG Protected double lines/wires LSA-BF-24 10 TC/20 1 TC/2 Max. continuous operating voltage Uc 180 V 24 V Voltage protection level Up <700 V <50 V LPZ LSA-BF-180 0→2 180 V <300 V 0→3 Nominal discharge current (8/20) In 5 kA 2.5 kA 2.5 kA Max. discharge current (8/20) Imax 10 kA 5 kA 5 kA Impulse current (10/350) Iimp 1 kA 0.5 kA 0.5 kA Cut-off frequency (-3 dB) MHz 30 MHz/100-600 Ω 3 MHz/100 Ω 3.5 MHz/600 Ω Temperature range ϑ -20 °C to +60 °C Storage temperature -40 °C to +80 °C Type LSA-A-LEI Connection strip for twin cores/wires 10 TC/20 Use with protection component LSA-B-MAG Colour Grey Dimensions Height Width Depth 31 mm 126 mm 20 mm Type LSA-T-LEI Isolating strip for twin cores/wires 10 TC/20 Use with protection component LSA-B-MAG; LSA-BF-24; LSA-BF-180 Colour White Dimensions Height Width Depth 31 mm 126 mm 20 mm Type LSA-E-LEI Earth wire strip to connect earth wires 34 Colour Red Dimensions Height Width Depth 31 mm 126 mm 20 mm Subject to technical alterations Ordering data Type Description Order no. LSA-A-LEI Connection strip for ten twin-cores 5084 00 8 LSA-T-LEI Isolating strip for ten twin-cores 5084 01 2 LSA-E-LEI Earth wire strip, 34-way 5084 01 6 5084 02 0 5084 02 4 5084 02 8 Dimension drawing of LSA-A-LEI; LSA-T-LEI 9 LSA-B-MAG Basic protection magazine, with 20 arresters LSA-BF-180 Basic and precision protection (1 TC) 180 V LSA-BF-24 Basic and precision protection (1 TC) 24 V 31 20 126 LSA-E Earthing bar for LSA modules 5084 03 2 LSA-M Mounting tray for four connection/isolating strips 5084 03 6 LSA-TOOL Wiring tool 5084 04 0 39.9 TBS_GB_V0_15072002 Dimension drawing of LSA-BF-180; LSA-BF-24 Please always state the order number when ordering. 99