Purpose of the development: 2.1. Installing the switch Installation of switches in KRU performed based on modernization projects developed by or agreed with the enterprise "Taurida Electric". The company has currently developed 50 projects for modernization of CSR and KRU (H) CMEA previous years of production from oil and low-oil circuit breakers. Information about the types of projects the installation of switches in the reconstruction KRU is reflected in the installation instructions developed by the company. In the case of circuit breakers in new products (for switchgear, building factories) installation is carried out, usually in accordance with the standard design of the plant, switchgear manufacturers. The requirements of operational documentation and installation instructions during installation and commissioning in the composition of the Republic of Uzbekistan are mandatory. 2.2. General Installation Requirements When checking the performance of the control circuit to connect the switch to the control unit on the circuit shown in the data sheet unit and check operation when activating and deactivating by closing the "dry" contacts in circuit "B" and "D". Blocking should not have a fixed time of an external force to the shaft switch. The equivalent weight, which can be loaded by the pusher interlock switch must not exceed 0.2 kg. To switch versions with output shaft to the ends of the equivalent moment of inertia, which can be attached to each side of the shaft should not exceed 3.5 x 10.4 kg · m2. Tightening torque nuts tire to the upper current collector switch must be 30 Nm. The switch is activated only on the staff of the control unit or by the inclusion of autonomous unit. Bending force generated busbars, should not lead to a deviation from the natural position of the pole switch for more than 1 mm. This should be carried out to measure the distance to an arbitrary bases in two mutually perpendicular directions. When busbars switches use copper or aluminum bus-section defined by the SAE for the rated current connection. If the tires are not covered by the corrosion-resistant coating, make a preliminary surface cleaning and lubrication of tire. 2.3. Preparing the breakers for use After installing the switch into the camera, a cell CSR, KRU is necessary to make the next volume of checks: - wipe dry with a clean cloth support insulation; - measurement of transient resistance con, cycles of the main chain; - one-minute insulation test voltage of industrial frequency; - health check. If the switch is stored for more than 6 months, this test should be carried out prior to installation. Measurement of transient resistance is carried out on all poles switch attorney device providing an error of not more than 5% in the range of 1,100 mO and test current of at least 10 A. The measured values must not exceed the specifications of the manual. If the measured value of the transition resistance above the critical, you must check measurement attorney device of the same class that and at the factory (test current = 100 A, the error of not more than 1%). Conclusion The manufacturer of the possibility of further use of the product after receiving the reports provided by the measurement of the customer. The test is a one-minute power frequency voltage with a continuous rise undergoes phase-earth insulation and isolation between open contacts of the circuit breaker poles. It is recommended to carry out tests on the insulation-phase. Dielectric strength-to-earth and insulation between contacts of poles 32 kV networks 6 kV and 42 kV networks to 10 kV. When testing the insulation between contacts of the breaker poles is permitted dismissive internal insulation breakdown. In the event of such a breakdown it is recommended to gradually reduce the voltage to a level where breakdowns stop, stand 10, 15 seconds at this level of stress, and then continue to rise, but the number of cycles of descent-ascent before reaching the specified test values should not exceed ten. It should also be noted that the described wash its hands breakdowns can generate a high-frequency test circuit transients characterized by high levels of surge generated. The occurrence of this kind of evidence surge breakdown of the air gap between the outputs of the switch or dismissive reference overlap isolation switch on the air. The reason for this phenomenon, as a rule, are resonant processes in the connecting cables between the test unit and the test switch (for example, because of the self-inductance is too long cable). In the event of this phenomenon is necessary to make the harmonization of the source of the test voltage and the test object (switch) by incorporating the test circuit serial resistor 1.10 ohm, and if this measure does not work, you need to connect an additional capacitor of 1000 pF in parallel switch under test ( See. Figure 5). 2.4. Using switches Staff service switches, must be familiar with this manual. During installation, inspection, repair and operation guided by "Rules of technical operation of electrical consumers," "Rules of safety in the operation of facilities of consumers" and "Rules for Electrical Installation." When the base and check the functioning of the circuit breaker must be securely grounded. When switching the vacuum switch small inductive currents (off unloaded transformers, block or the engine is started, the compensation coils) can occur overvoltage dangerous to the insulation of electrical equipment, in that, by using a series of vacuum circuit breakers TEL consumers should be guided by the instructions for use BB / TEL for switching inductive loads ITEA674152.003I1 (see. Annex B).

Recommended application field: Vacuum switches BB / TEL designed to work in complete switchgear (KRU) and the camera stationary unilateral service (CSR) internal and external adjustment voltage class up to 20 kW three-phase AC 50Hz for systems with isolated or grounded neutral.

Technical characteristic: Main technical data: Climatic modification and placement category U2 GOST1550, operating conditions at the same time: - maximum height above sea level up to 1000 m; - the upper operating temperature of the ambient air in the switchgear (CSR) shall be equal to plus 55 ° C, the effective value of the ambient temperature switchgear and CSR, plus 40 ° C; - lower operating temperature of the ambient air, minus 40 ° C; - the upper value of the relative humidity of 100% at + 25 ° C; - environment not explosive, not containing gases and vapors that are harmful to insulation, no saturated conductive dust in concentration reducing insulation electric strength parameters of the circuit breaker. Working position in space - any. For version 70, 71, 82, 83, with the base downwards or upwards. Switches are designed to work in the operations of the "O" and "B" in the cycle about, 0,3s, IN, 15c, IN; Oh, 0,3s, IN, 180c, IN. By resistance to external mechanical factors corresponds to the group switch M7 GOST 17516.1,90, wherein the switch is operable under the influence of sinusoidal vibration in the frequency range (0.5 * 100) Hz with a maximum acceleration amplitude of 10 m / s2 (1g) and repeated shocks with an acceleration of 30 m / s2 (3g). Switches meet the requirements of GOST 687, IEC, 56 and the technical conditions TU U 25123867.002,2000 (Itea and 674152,002 TU, TU U 13795314.001-95). The switch does not contain precious metals.

Advantages over analogues: High reliability; No need for maintenance throughout the service life; Can be installed in any switchgear cabinets medium voltage; A wide range of operating supply voltages; Low power consumption of the auxiliary power supply network; Functions of remote signaling; Certification of products for compliance with national standards of consumer countries and international standards; A wide range of services and customer support throughout the entire life cycle of products; Environmental cleanliness and safety for the environment.

The development stage readiness: Tested experimental exploitation order

Description of the development:
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Vacuum switches BB / TEL (hereinafter - switches) designed to work in complete switchgear (KRU) and the camera stationary unilateral service (CSR) internal and external adjustment voltage class up to 20 kW three-phase AC 50Hz for systems with isolated or grounded neutral . Vacuum switches Series BB / TEL, 10 are protected by a patent number 2,020,631 on 30.09.1994 In a constructive solution is the use of single-pole switch the electromagnetic actuators with "magnetic latch" mechanically connected common, non-load bearing, shaft-synchronizer. In parallel, the United electromagnetic coil drives the phase switch when executing commands connected to the pre-charged capacitor in the control units (hereinafter BU / TEL). This design has achieved the following features compared to conventional vacuum circuit breakers (BB): - High mechanical and switching resources; - Low power consumption for buses operational voltage (charging and maintenance parameters of condenser tanks "ON", "OFF"); - Small size and weight; - Lightness and ease of adaptation to any type of switchgear, CSR; - Possibility to use a wide range of supply voltage of the secondary circuit operative; - Freedom from maintenance throughout the life cycle. - Low labor intensity of production and, as a consequence, reasonable price. Vacuum switches BB / TEL are certified compliant with International Electrotechnical Commission IEC 56, a certificate of compliance with GOST 687.78. Control switches makes complete control units supplied by the series BU / TEL-05A, 1BU / TEL-12 or BU / TEL-10.

Certif 5

corresponds technical description
Conforms to technical characteristic

Photo

Country Ukraine

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E-mail: gal@uintei.kiev.ua