The explosion-proof subscriber calling device PKV "Trombone SORS-AVU" (hereinafter referred to as AVU) is a component of the Voice Feedback System "Trombone SORS" (hereinafter SORS).AVU is intended for the organization of two-way voice communication with the control room, where the device for receiving calls is located - the dispatcher's console "Trombone SORS-PD" (hereinafter referred to as PD). The main component of SORS, which provides power and communication between all AVUs and PDs in the system, is the local communication unit "Trombone SORS-LBS" (hereinafter LBS).It is possible to connect 1 dispatcher console and up to 4 communication lines with AVU to each LBS, up to 8 AVUs can be installed in each communication line.Up to 16 LBS devices can be used in SORS.
In the SORS system, 2 simultaneous communication sessions are possible.All components of the SORS system are connected by a digital communication line (RS485 interface) up to 1200m long.
PKV "Trombone SORS-AVU" is a terminal subscriber intercom, which can be installed in hazardous areas of industrial enterprises and facilities, and as part of the Trombone SORS system can be used to build:
- systems of voice feedback, as an element of SOUE types 4 and 5 (fire automation systems);
- dispatch communication systems.
- public address systems.
The AVU has explosion protection of the “flameproof enclosure“ d ”" type and is marked with explosion protection in accordance with GOST 31610.0-2014 (IEC 60079-0: 2011) 1Ex d IIC T6 Gb / Ex tb IIIC T85 ° C Db.AVU refers to explosion-proof electrical equipment of groups II, III in accordance with GOST 31610.0-2014 (IEC 60079-0: 2011) and is intended for use in hazardous areas in accordance with the established explosion protection marking, the requirements of TR CU 012/2011, GOST IEC 60079-14-2013 , other regulations governing the use of electrical equipment.
PKV "Trombone SORS-AVU" is designed for operation at ambient temperatures from minus 0 ° С to plus + 40 ° С and atmospheric pressure from 84 to 106.7 kPa.The device has climatic modification UHL1 in accordance with GOST 15150-69 and the degree of protection of the shell - IP66 in accordance with GOST 14254.
| Explosion protection marking | 1Ex d IIC T6 Gb / Ex tb IIIC T85 ° C Db |
| Sheath protection degree | IP66 |
| Supply voltage, constant, via the communication line from Trombone - SORS-LBS | 8-36V |
| Power consumption no more | 0.4 watts |
| Port for communication with Trombone - SORS-LBS and other AVU | RS485 |
| Number of RS485 ports (connectors) for communication with LBS and other AVUs | 1 (2) |
| Maximum length of communication lines with LBS | 1200 m |
| Overall dimensions of AVU, no more | 263x146x94 mm |
| AVU weight, no more | 2.5KG |
| Body material | Aluminium alloy |
| Working temperature range | 0 - + 40C |
AVU is equipped with one or two explosion-proof cable glands of the KV, KV series TU 27.33.13-138-81888935-2019.Connecting thread of cable glands M20x1.5.The cable glands allow the entry and exit of round cables of various diameters:
