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POWER SUPPLIES AND STATIONS RECULAR FOR CATHODE PROTECTION General: The power supplies RECULAR for cathode protection are designed for active corrosive protection of pipelines and other metal objects stored in ground or in water, from the corrosion caused by changing wandering currents from DC traction or other sources. They are available for the all of electrode types. Assortment: Power supplies are produced in three versions: single-phase power supply with microcomputer RECURAL 20, type SZK 20 40/230M.1 - 20A, 40V DC three-phase power supply with microcomputer RECURAL 40, type SZK 40 40/400M.1 - 40A, 40V DC type SZK 40 40/400M.1K2 - 40A, 40V DC – box type B4 single-phase power supply without microcomputer RECULAR 3, type SZK 3 24/230 - 3A, 24V DC N1.2 B4 Characteristics: Switching power supplies RECURAL operate by middle-frequency power transmission with frequency about 16 kHz. RECURAL 20, 40 contain control unit with microprocessor. Power supplies control the output power and operate in 2 modes: in automatic and manual mode. Required constant potential is maintained in automatic mode with measuring probe in the earth and required constant voltage is maintained in manual mode. Mode and required values for power supplies RECURAL 20, 40 are adjusted by 6-button keyboard with 2x16 character alphanumeric LCD display. There is displayed just adjusted mode, required value and all the measured values on the display. Parameter adjustment can be protected by password. N3 N8 Power supplies RECURAL 20, 40 enable to operate in two clocking modes: 1. clock mode (internal) - asynchronous, with programmable clock parameters (by 0,1 sec) 2. clock mode (external) - synchronous from the binary input (T+, T-) of master system, e.g. GPS system etc. Options - extensions for RECURAL 20, 40 Serial interface RS 232/485 enables to communicate through serial line with others devices: e.g. control workplace, computer with visualizing software etc. Remote parameter entering and monitoring is possible to execute via modems or radio stations. Microcomputer memory expansion for selected data for supplementary printing by PC. Connection and accessories of RECULAR 20, 40 Properties: Used pulse-width regulation ensures high efficiency of switching power supplies in wide range of input voltage. Good regulating device properties enable to operate in clock mode of output voltage with frequency 1 Hz. Power supply output is short circuit proof and galvanically separated from input. - efficiency 93 % in nominal operating point power factor of first harmonic ≥ 0,96 power supplies suitable into SELV, PELV circuits high switching frequency of power supplies possibility of local supplementary covering with PROTEC 3 possibility of autonomous installation in kiosks 10/2006 DEHOR – elspec. Litvínov s.r.o. Recommended accessory: Stand for N3, N8 box Connection of RECULAR 3 Technical data POWER SUPPLY TYPE Supply voltage, mains Nominal output voltage Nominal output current Short circuit proof Maximum input power Potential adjustment Potential stability, voltage deviation Clock frequency of output voltage rise time By clocking stop time Control microcomputer (value entering, displaying) Dimensions (W x H x D)/ box type Weight Recommended protection and accessory Input protection DEHNguard T275 (FM) Output and measuring protection DEHNguard T75 (FM) Power supply stand (W x H x D) RECURAL 40 RECURAL 20 RECURAL 3 SZK 40 40/400M.1 SZK 20 40/230M.1 SZK 3 24/230 SZK 40 40/400M.1K2 3 AC 400V, 50 Hz, TN-S 1 AC 230V, 50Hz, TN-S 40 V DC 24 V DC 0 ÷ 40 A 0 ÷ 20 A 0÷3A short circuit run, galvanic separation 2 kVA 1 kVA 100 VA 0÷4V ± 50 mV max. 1 Hz only with additional relay 330 ms 200 ms 570 ms reaction time of relay built-in, with keyboard and with 2 x 16 character without microcomp., keyboard alphanumeric LCD display with three-digits LED display 260x490x480 mm / N3 260x440x300 mm / N8 120x163x108 mm / N1.3 306x495x290 mm / B4 35 kg / N3 20 kg 1,5 kg 30 kg / B4 3 pcs. 2 pcs. 2 pcs. 4 pcs. 4 pcs. 4 pcs. 500x270x490mm / N3 Mounting on panel / B4 500x270x310mm / N8 Mounting on DIN rail / panel Ambient conditions according to IEC 60 364-3 (STN 33 2000-3): Ambient temperature AB4 (from -5 °C to + 40 °C) Altitude AC1 (to 2000 m above sea level) Water occurrence AD1 (insignificant) Occurrence of foreign matters AE1 (insignificant) Occurrence of corrodents or pollutants AF1 (insignificant) Vibrations AH2 (middle) EMC STN EN 50081-2: 1998, STN EN 50082-2: 1999 Storage temperature range from -25 to +40°C, no longer than 24 h to +70°C STATIONS FOR CATHODE PROTECTION RECURAL SZKS The stations are designed as independent compact units that supersede the kiosks and can be placed in outdoor environment e.g. on the concrete foundations, power distributions, power poles, but also in buildings. In stations are used the power supplies PROTEC 3, 20, 40 that are built in the lockable distributing box with covering to IP54. Besides the power supply, there is electrometer in the box included (for straight monitoring without opening the box), overvoltage protections, required protection and terminals. Access to control elements is from the front, to electrometer from the side, cable bushings and terminals are located in bottom part of box. 10/2006 DEHOR – elspec Litvínov s.r.o. Jiráskova 413 CZ-436 01 Litvínov +420 476 731 365 DEHOR –tel./fax: elspec. Litvínov s.r.o. e-mail: [email protected], http://www.dehor.cz