Alecto E1842C, Руководство по эксплуатации, Страница: 6 / 14

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1.4 Functional description
1.4.1 Transducer utilizes principle of direct conversion. Transducer fall into category of
rectifier-type transducers.
1.4.2
Transducer Schematic is shown in Annex A.
Transducer Schematic is composed of following parts:
-
measuring transformer which also provides galvanic isolation, its primary winding is a main
lead of measured circuit;
- bridge rectifier;
- smoothing circuit for decreasing ripple of output signal;
- Current-limiting circuit (based on Zener diodes) which also protect output circuit against
signal of reverse polarity.
1.5 Marking and sealing
1.5.1 The following information is marked on a cover of the transducer:
- Name and type designation;
-
Manufacturer’s mark;
- Unit symbols of input and output signals;
- Load resistance range;
- Overvoltage category;
- Module of intrinsic error;
- Designation of numbers and polarity of output terminals;
- Serial number (two last digits describe year of manufacture).
1.5.2 Sealing of the transducer is done with a bitumen mastic №1 (according to
ГОСТ 18680-73) and applies over one of four self-tapping screws.
1.6 Packing
1.6.1 The transducer is delivered in transportation packing.
1.6.2 In transport container there is:
- Operation manual (1 copy for set of 50 transducers for or for every separate delivery);
-Packing list.
1.6.3
The transducer is packaged in individual packing.
The passport is inserted inside the individual packing.