- BrandНПП «МАГНИТО-КОНТАКТ»
- Country of manufactureRussia
You can buy from us at an affordable price a passive barrier of spark protection BISSH. The passive barrier of intrinsic protection BISCH provides the intrinsic safety of one channel of the electrical circuit.
1. General information
"BISSH" has a galvanic connection between the input and output and consists of shunt diodes (zener diodes), resistors connected in series and fuses.
2.1. Barrier of intrinsic protection of the “BISCH” loop is designed to ensure the intrinsic safety of one loop of a fire or burglar alarm, with fire or security detectors included in it, sensors with normally closed or open contacts, as well as detectors powered by an alarm loop with a level of intrinsic protection “ia” for explosion - proof electrical equipment of group II, subgroups IIC / IIB according to GOST 30852.10 - 2002 (IEC 60079 - 11: 1999). BISSH is designed to be located outside the hazardous area.
2.2. BISSH can be used in conjunction with security, fire and burglar - fire reception and control devices (PPKOP) such as "GIPPO - 1M", "Granite 2", "Signal 20P SMD", "Signal 20" and the like, provided that the technical characteristics of the BISH and Control Panel. When using the BISSH, it is necessary to take into account that this barrier introduces a resistance of the order of 660 Ohm into the signaling loop, therefore, when it is used in conjunction with receiving and control devices, it should be taken into account:
In the burglar alarm mode, the barrier does not distort the Control Panel operation.
In the fire alarm mode with normally closed detectors, the barrier does not distort the operation of the Control Panel.
In the fire alarm mode with current - consuming detectors, the control panel can distort the Control Panel operation when the alarm loop is short - circuited, for example:
- In case of a short circuit in the alarm loop, the Control Panel "Granit 2" will issue a notice "Attention" (one detector has been triggered) instead of a "Fault" notice.
- When the alarm loop is short - circuited, the Control Panel “Signal 20P SMD” will issue a notice “Attention” (one detector has been triggered) instead of the “Fault” message.
- "Signal 20" Control Panel will issue a "Fire" notification in the event of a short circuit in the alarm loop.
2.3. BISSH has the degree of protection of the shell according to GOST 14254 - IP 54.
2.4. BISS does not create industrial interference.
2.5. BISSH is designed to operate at temperatures from minus 20 ° to plus 40 ° С.
2.6. During operation of the BISSCh, the following effects are allowed: - vibrations with a frequency of 10 to 150 Hz at a maximum acceleration of 4.9 m / s² (0.5 g). - relative humidity up to 93% at a temperature of 40 ° С.
2.7. BISSH contains an output intrinsically safe electrical circuit made with explosion protection level "ia".
2.8. Barrier of intrinsic protection of the “BISSH” loop is a passive barrier, belongs to the class of associated electrical equipment intended for installation outside hazardous areas and is marked for explosion protection [Exia] IIC / IIB according to GOST 30852.0 - 2002 (IEC 60079 - 0: 1998). "BISSH" complies with the requirements of the technical regulation of the Customs Union TR CU 012/2011 "On the safety of equipment for work in explosive atmospheres", which establishes on the unified customs territory of the Customs Union uniform requirements for the use and execution of equipment for work in explosive environments. An example of designation when ordering: "BISCH" ATFE loop spark protection barrier. 426439.001 TU "
3.1 Characteristics of the LSI in normal operation:
- voltage at the input terminals of the BISSH no more, V 24.
- the resistance introduced by the BISSH to the loop, within the limits, Ohm from 620 to 700.
3.2. Characteristics of the LSI in emergency operation:
- Voltage at the input terminals Um, no more, V 250.
- Open circuit voltage (maximum output voltage) U0, V no more than 28.4.
- Short - circuit current (maximum output current) I0, mA, no more than 88.
- Maximum output power P0, no more, W 0.6
3.3. Characteristics of the alarm loop located in the hazardous area:
- inductance of the intrinsically safe loop "ia" (the sum of the values of the intrinsic inductance of the equipment installed in the explosive zone and the inductance of the connecting cable with this equipment), L0, not more than, mH - 2 (IIC) - 10 (IIB);
- loop capacity (the sum of the values of the intrinsic capacity of the equipment installed in the explosive zone and the capacity of the connecting cable with this equipment), no more, С0, μF - 0.04 (IIC) - 0.3 (IIB)
The average service life of the BISS is 10 years.
4.1. The overall and installation dimensions of the BISSH are presented in Appendix B.
4.2. Structurally, the BISSH (Appendix B) is made in a plastic case, consisting of a cover (2) and a base (1). Inside the case is a printed circuit board with elements filled with a compound. Thus, the design of the BISSH excludes the possibility of repair and replacement of elements of its internal installation. The compound is not poured into terminal blocks for connecting connecting lines between Control Panel and BISSH (5), terminal blocks for connecting an intrinsically safe loop "ia" (6), as well as a replaceable fuse FU1 (4). All conductors are led into the BISSH case through cable glands (3). The rotation of the screws of the blocks, with the help of which the connected conductors are clamped, should be done with a screwdriver with a diameter of no more than 3 mm.
4.3. Mass of BISSH, no more, kg 0.6. The product class in terms of the degree of protection of a person against electric shock is I in accordance with GOST 12.2.007.0.
5. Operation and Explosion Proof
5.1 The functional block diagram of the “BISSH” line spark protection barrier is given in Appendix A.
5.2 BISSH provides explosion protection by limiting the electrical power supplied to the hazardous area through communication circuits with electrical equipment.
5.3 BISS contains the following functional elements:
- limiting resistors that determine the short - circuit current;
- a group of limiting zener diodes that determine the maximum value of the open circuit voltage in the intrinsically safe circuit;
5.4 The power characteristics of the BISSh limiting resistors are selected taking into account the regulated power reserve adopted in intrinsically safe circuits. Limiting zener diodes are used to limit the voltage and current at the ISSH intrinsically safe output to safe levels in emergency situations. The values of the no - load voltages (U0) determined by the operation of these groups of limiting Zener diodes, as well as the values of the short - circuit currents (I0), are given in clause 3.2.
5.5. During normal operation of the ISSH loop barrier, a signal with a voltage amplitude lower than the breakdown voltage of the voltage limiters arrives at its input through the fuses FU1, FU2 and resistor R1. With such an input signal, a leakage current of tens of μA will flow through the voltage limiters to the ground.
In an emergency situation associated with the appearance of a dangerous voltage (250V, 50Hz) in the input circuits of the BISSH, which significantly exceeds the breakdown voltage of the voltage limiters, a current begins to flow through the fuses FU1, FU2, which significantly exceeds the rated operating current of the fuse, which leads to the operation of the fuse in within a few microseconds. Thus, the voltage limiters will ensure a safe voltage level at the output of the BISSH, and, accordingly, in the explosive zone, before the fuse blows. In an emergency situation associated with the appearance of a short circuit in a loop located in an explosive zone, the current flowing in the loop will be limited by the current - limiting resistor R1 at a safe level.
6.1. On the cover of the ISSH loop barrier, the marking is made in accordance with GOST 30852.0 - 2002 (IEC 60079 - 0: 1998), which contains:
- name or registered trademark of the manufacturer;
- product type designation;
- explosion protection marking;
- product serial number;
- date of manufacture;
- the name of the certification body and the number of the certificate;
- parameters of the intrinsically safe circuit;
- the degree of protection of the shell according to GOST 14254;
6.2. The connector and cable gland for connecting intrinsically safe circuits are marked in blue and marked with a "intrinsically safe circuits" plate in accordance with the requirements of clause 12.2 of GOST 30852.10 - 2002 (IEC 60079 - 11: 1999).
6.3. Signs of the polarity of the contacts of the blocks are marked near the places of connection of external electrical circuits to the BISS.
7.1. Individual and group packing of the BISSh loop isolator barrier meet the requirements of GOST 23088 - 80 and ATFE.426439.001 design documentation, while the cable glands are installed in the BISSh case and do not move freely, and the cover fixing screws are tightened.
7.2. Barriers of spark protection of the “BISSH” loop are packed in individual and shipping containers. BISSH loop spark protection barriers are packed in 1 pc. in boxes made of cardboard box according to GOST 7933 - 89 (individual packing). A passport and an operating manual with an indication of the product parameters, operating conditions, installation instructions, explosion safety measures, date of manufacture, serial number and OTK stamp are enclosed in an individual package with each ISSH loop barrier. Individual packages with products are packed in a shipping container - a corrugated cardboard box (GOST 9142 - 90). The free space in the shipping container is filled with furniture cotton or paper. The shipping container contains a label indicating the number of spark protection barriers for the BISCH loop in the container, the date of manufacture and the OTK stamp.
7.3. It is possible to pack the BISSh loop spark protection barriers in a container agreed with the consumer.
7.4. The marking applied to the shipping container meets the requirements of GOST 30668 - 2000 or the requirements agreed with the consumer.
7.5. Shipping container weight with products, no more than 15 kg.
8. General instructions
8.1. Upon receipt of boxes with spark protection barriers of the “BISCH” loop, it is necessary to check the integrity of the container. In case of damage, an act should be drawn up and a complaint should be addressed to the transport organization.
8.2. In winter time boxes with spark protection barriers of the “BISCH” loop should be unpacked in a heated room not less than 6 hours after they are brought into the room.
8.3. Check the completeness in accordance with the passport for the barrier.
8.4. It is recommended to keep the passport, which is a legal document when filing a complaint with the manufacturer and supplier.
9. Ensuring explosion protection during installation
9.1. Persons with the necessary qualifications, familiar with this passport and the OM and instructed in safety precautions must be allowed to work on the installation, installation, maintenance and operation of the BISSH.
9.2. Before proceeding with the installation of the “BISSH” loop spark protection barriers, it is necessary to inspect them. In this case, it is necessary to check the marking for explosion protection, and make sure the integrity of the enclosures and cable glands of the BISSH.
9.3. All work must be performed with disconnected power supplies.
9.4. When installing the BISSh loop isolating barriers, it is necessary to be guided by this PS, chapter 3.4 of the EEP, PUE and other documents in force in this industry.
9.5. Barriers of spark protection of the “BISSH” loop are installed outside the explosive zones of premises and outdoor installations.
9.6. It is FORBIDDEN to connect to one BISSH loop with fire and (or) security detectors installed SIMULTANEOUSLY in an explosive zone and in an explosion - proof zone.
9.7. The parameters of the alarm loop must comply with the requirements of clause 3.3.
10. Installation procedure
10.1. The installation of the BISSH should be carried out on a wall or other structure outside the explosive zone in accordance with the project, according to the installation dimensions given in Appendix B, taking into account the ease of maintenance and operation.
10.2. Installation should be done in the following sequence:
10.2.1. Install an intrinsically safe loop "ia", connecting lines between Control Panel and BISSH.
10.2.2. Unscrew the four screws 7 (Appendix B) on the cover 2. Remove the cover 2 from the base 1. Fix the base of the case with three screws at the location of the BISSH. Bring the conductors of the intrinsically safe loop "ia" and connecting lines between Control Panel and BISSH into the case through cable glands 3.
10.2.3. Connect the conductors of the intrinsically safe loop "ia" to terminal block 6 (Appendix B) in accordance with the indicated polarity, and the connecting lines of the Control Panel with BISSH to terminal block 5 also with the indicated polarity. Place cover 2 on base 1. Make sure that under the "Intrinsically safe circuits" label there are indeed conductors of the "ia" intrinsically safe loop. Tighten screws 7 and seal (sealed by the installer).
10.2.4. When installing the BISSH, it is necessary to take into account the resistance introduced by the barrier into the loop, therefore, it is necessary to calculate the terminal resistance of the loop Rok, according to the following formula: Rok = Rok pass - 660 - Rshl; where Rok pass is the terminal resistance of the loop according to the passport for the Control Panel; Rshl is the resistance of the conductors of the intrinsically safe loop "ia".
10.2.5. After installation, check the parameters of the "ia" line, which must satisfy the following conditions:
- resistance of conductors of intrinsically safe loop "ia", no more, Ohm 150;
- resistance of leakage between conductors of intrinsically safe loop "ia", not less, kOhm 50;
- the requirements of clause 3.3.
10.2.6. The operating conditions of the “BISCH” line spark protection barrier must be no worse than those specified in section 2.5., 2.6.
11. Preparation for work
Before switching on the ISSh loop isolator barrier, make sure that its installation and installation comply with the instructions in sections 9, 10. Study the ATFE.426439.001 PS operation manual.
12. Ensuring explosion protection during operation
12.1. Persons who have studied this manual and have passed the necessary instructions should be allowed to operate the spark protection barriers of the BISCH loop.
12.2. When operating the spark protection barriers of the “BISSH” loop, it is necessary to perform all measures in full compliance with Sections 9, 10 of this PS. In this case, it is necessary to be guided by this PS, PUE, and other regulatory documents that determine the operation of explosion - proof electrical equipment.
12.3. During operation, the barriers of spark protection of the “BISSH” loop must be subject to systematic external and periodic inspections.
12.4. When inspecting the spark protection barriers of the BISCH loop, it is necessary to check:
- no breakage or damage to the insulation of loops and connecting wires;
- absence of cracks and visible mechanical damage, dust and dirt on the body of the spark protection barrier of the BISCH loop.
- reliability of fixing the loop conductors and connecting wires with the cable gland.
- the integrity of the seals of the organization that carried out the installation (with a frequency of 1 time in 6 months).
12.5. It is strictly forbidden to operate the BISSh loop spark protection barriers with damages or malfunctions.
12.6. During the routine inspection, all the above - mentioned external inspection work must be performed.
12.7. The frequency of routine inspections of the BISSh loop spark protection barriers is set depending on the working conditions, but at least twice a year.
12.8. Maintenance information must be entered in the maintenance log. Maintenance activities should be carried out by specialized organizations that have licenses established in Russia for this type of work.
12.9. Operation of spark protection barriers of the “BISSH” loop must be carried out in accordance with the requirements of this PS, Ch.3.4. PEEP, as well as other regulations in force in this industry.
13. Ensuring explosion protection during repair
13.1. Repair BISSH should be performed only with the power off with an entry in the operation log.
13.2. Repairs are only allowed by replacing fuse FU1 (4) Appendix B.
13.3. In case of other malfunctions, repair of the BISH by the consumer, as well as by the organization that performed the installation, is FORBIDDEN! In this case, the BISSH is sent for repair to the manufacturer.
14. Storage and transportation
BISSH are transported by all types of transport in covered vehicles (by air - in heated pressurized compartments) in accordance with the rules for the carriage of goods in force for the respective mode of transport. Arrangement and fastening of boxes with BISSh should exclude the possibility of their displacement and impacts against each other and against the walls of the transport.
The conditions for transportation and storage of the BISH must comply with conditions 5 or 3 (by sea) in accordance with GOST 15150 - 69. The term of the BISSH stay in the corresponding transportation conditions is not more than 3 months
BISSH should be stored in the warehouses of the consumer and the supplier both in transport containers, stacked in stacks of up to 5 boxes in height, and without packaging - on racks. The indoor air must be free of dust, acid and alkali vapors, and gases that cause corrosion.
The barriers are unpacked in a dry, heated room and kept for at least 6 hours to warm up and dry out. Only after the barriers can be put into operation.