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The current-to-current transmitter TRT is designed to convert alternative current signal coming from current transformers into a standard 2-wire current signal, which is more suitable for transmitting. Together with a current transformer, the TRT unit forms an AC/DC current converter suitable to measure big AC currents up to more than 1000 A. The 4…20 mA output can be used for measuring, regulation, and registration in special control systems. The TRT transmitter is based on modern integrated circuits and is a fixed-range transmitter. Its input ranges cover most popular current transformer output signals (0…1 A, 0…5 A) and customer specified inputs as well. TRT is available in a casing for mounting inside a current transformer, in 2 casings for DIN-rail mounting as well as mounted into an IP65 protection box, as the latter 3 versions can be equipped with an optional input isolation. TRT is an easy-to-use, low-cost, and EMS- protected device. Its application area includes power stations, electrical equipment, and electricity production and distribution. This transmitter can also be used as sensor transducer in various industrial control systems and everywhere, where AC to DC current conversion is desirable.
| Монтаж | DIN rail, In box IP65, Free, In socket |
|---|---|
| Корпус | 35x110x58 mm, 35x78x91 mm, 43x33x16 mm, 80x80x60 mm |
| Захранване | 115 VAC, 230 VAC, 8…32 VDC |
| Аналогов вход | 0…1 A AC linear current, 0…5 A AC linear current, Other |
| Аналогов изход | 4…20 mA |
| Input |
|
| Input signal | alternative current |
| Frequency | 50/60 Hz |
| Input range | 0…1 A or 0…5 A |
| Other input ranges | 0…max. 10 A |
| Input isolation (option) (1) | internal current transformer |
| Output | |
| Output signal | 4…20 mA, 2-wire |
| Current limits | Low = 3 mA, High = 28 mA |
| ZERO and SPAN adjustment | ± 10%, via trimpots |
| Maximum line load | 800 Ω at 24V/20mA |
| Accuracy | |
| Measurement error at 25 °C | 0.5% from span |
| Non-linearity | 0.5% from span (up to 1.0% w/ input isolation) |
| Temperature drift | 0.1% from span for 1 °C |
| Supply voltage variation influence | 0.02% from span for 1 V |
| Power supply | |
| Mains supply voltage | 230 VAC or 115 VAC(2) |
| Isolated low voltage (2) | 12…24 V |
| Non-isolated low voltage | 8…32 VDC |
| Admissible variations | 10% p-p at 50 Hz |
| Operating conditions | |
| Ambient temperature | -20…70 °C |
| Ambient humidity | |
| – mounted in a transformer | 0…80 %RH, non-condensing |
| – mounted on a rail | 0…95 %RH, non-condensing |
| – mounted in a box | 0…95 %RH |
| Design and materials | ||||
| Mounting | free | in box (3) | on rail | in socket (4) |
| Dimensions [mm] | 43x33x16 | 80x80x60 | 35x110x58 | 35x78x91 |
| Weight | 20 g | 110 g | 90 g | 180 g |
| Protection, case/terminals | IP40/20 | IP65 | IP20 | IP20 |
| Case material | plastic | plastic | plastic | plastic |
| Wiring | screw terminals | screw terminals | plug-in terminals | socket UNDECAL (5) |
(1) Not available for the version for free mounting (G12 = “B”)!
(2) Only for the version for mounting in socket
(3) May be mounted on rail by a special snap-on accessory, which is ordered separately (see ‘Accessories’).
(4) May be also mounted on a DIN rail
(5) Ordered separately (see ‘Accessories’)
Наименование на проекта: Решения в областта на информационните и комуникационни технологии и киберсигурността в малките и средните предприятия
Краен получател: Комеко АД
Обща стойност: 20 000 лв
Цел на проекта: Допринасяне за ускоряване на прехода към цифровизация на икономиката чрез предоставяне на безвъзмездни средства за внедряване на информационни и комуникационни технологии и решения, осигуряващи повишаване нивото на дигитализация на малките и средните предприятия
Етапи: Създаване на онлайн магазин, създаване на корпоративен уебсайт, изграждане на система за архивиране на информация
