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Help CenterTBB (Z) Type High-voltage Var Compensator
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TBB (Z) type high-voltage var compensator
Product Overview:
RT-TBB (Z) type high-voltage var compensator is mainly used for 6kV, 10kV or 35kV busbar in substations or large industrial users. It is used to improve system power factor, stabilize bus voltage and improve power supply quality. The device mainly controls the switching of the parallel capacitors (groups) with microcomputer technology according to the system voltage, reactive power, power factor and other parameters, and thus realizes reactive power compensation. The device is mainly composed of an isolating switch, a high-voltage vacuum contactor (high-voltage vacuum circuit breaker), a high-voltage shunt capacitor, a high-voltage series reactor, a discharge coil, and a lightning arrester, etc., and has two types,
i.e. indoor cabinet type and outdoor frame type.
Product Features：
--Unit structure, each set has a control protection unit, inlet cabinet unit and high-voltage switching capacitor unit determined according to the number of different groups. It is convenient to connect and maintain between units.
--Complete sets of equipment are equipped with observation window, live display, running indicator, etc. on each unit, and electromagnetic locks are installed on each inlet unit operating mechanism and each unit to meet the requirements of the five defenses, for the convenience of users to observe and ensure the safe operation of the equipment.
--According to the harmonic situation of the system, calculate the reactance rate of each group of loop reactors, add 1%-12% dry series reactors respectively, reduce the system overvoltage, limit the closing inrush current, and suppress the system ultra harmonics, so as to avoid resonance and protect the capacitor for its reliable running.
--With overvoltage, under voltage and open triangle protection, unbalance protection, and over current protection functions, etc.
Reactive power automatic compensation, according to the voltage priority principle, the capacitor bank is automatically switched according to the reactive power, so that the system keeps the condition of no overvoltage, less
--Under compensation or overcompensation, and minimum reactive loss.
--It can control one to two busbars, one to eight sets of capacitors, and automatically judge the operation of two busbars of the substation, that is, the two busbars can be controlled independently at the same time (separate control), or can be controlled uniformly in parallel, or separately in a single line.
Main Technical Parameters：
-- Rated voltage: 6kV, 10kV, 35kV;
-- Rated capacity: ≤6000kvar (6kV), ≤12000kvar (10kV), ≤30000kvar (35kV);
-- Number of capacitor switching channels: 1 to 8 channels;
-- Capacitor wiring method: single star or double star;
-- Switching mode: optional between automatic and manual;
-- Reactance rate: choose the appropriate reactance rate (1%, 4.5% to 6%, 12%) according to the inrush current and harmonic wave;
-- Control voltage: 220V AC or 220V DC;A
-- Sampling signal: secondary voltage of voltage transformer (100V); secondary current of current transformer (5A).
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