HCRS 350kV/1050kVA Inductance Resonant Reactor

Mode: HCRS 350kV/1050kVA
Cylinder type  Single phase
Rated capacitance:1050kVA  Rated voltage: 350kV
Rated current: 3A  Rated frequency: 50Hz
Partial discharge level: <5pC under 100% rated voltage,
                                          <3pC under 80% rated voltage,
Output voltage waveform deviation: ≤1%
Max. capacitance of test object: 3000pF～30030pF
Working time and temperature: working 60min under rated load, winding temperature raise not surpass 65K, oil temperature raise less than 55K
System quality factor (Q): Q≥50
Noise level: ≤70dB (measured in 5 meter distance)
Insulation level: 1 min under 110% rated voltage
Continuous working time: 60 min under rated load
Measuring system accuracy: 1grade
Input power: single phase, 380V, rated frequency 50Hz,
Protection function: has the function of over-voltage, over-current and test object flashover protection; Reactor max. air gap and min. air gap protection.
Linearity: 10%-100% reactance, error≤±1%
Structure: iron coil structure, user can change the reactance through adjusting open coil gaps, two epoxy tube, the steel bracket is made of stainless material in case of the reducing of quality factor which caused by eddy loss; pedestal has considered the heat which is caused by high-intensity magnetic field; the resonant system designation has considered the expand with heat and contract with cold of the oil.
- System overall structure requirement
1. When two module serial connection, its must guarantee:
1.1 Transmission mechanism should be connected convinent and synchronism, the transmission should be flexable and low noise.
1.2 Each module’s location and fixation should be convinent, reliable, firstly, fix reactor, and then connect transmission shaft;
1.3 Its should be convinent for the current leading circult between modules.
1.4 Each module voltage distribution almost correspond with each other.
1.5 The connection of HV lead wire should be fixed and convinent;
2. Each reactor Z=f(δ) (The relations between impedance and air gap) characteristic curve should be almost same as each other, at the same air gap position, the different between impedance not surpass 5% of minimum value.
3. Reator should has reliable air gap limit switch, and equip with air gap sensor, the user can read the iron coil’s gap on the control console.
4. Transmission device should has back-up protection treatment, in case of damage to the transmission from phase sequence opposite or air gap limit switch dysfunction
5. The system’s tuning and resonance function should be excellent. The system should not detuning when regulating device raise voltage, resonant(adjusting air gap) raise voltage or under any test voltage (not surpass rated voltage). And, when the exciter transformer output a relative low voltage (1-1.5kV), the system can also tuning to resonant state.
6. Regulating device should has the function regulation from zero position and auto return-to-zero function
7. The reactor’s air gap will back to the middle position after testing.
8. Regulator has the protection function when motor out of control.
9. Dimension requirement on transportation and crane
- Internal structure:
①. 30-Q-130 Grain-Oriented Electrical Steel,
②. There are earthing baffle between winding and iron coil, the earthing is reliable.
③. We do many improment on the system; abandon some unreasonable structure and creat our new resonant. New variable inductance power frequency resonant reactor’s working life not less than 60 years.
④. The iron steel has been done the chip removing treatment. And then form a entirety with curing agent, which lower the noise; equip guide rail between adjustable iron coil and fixed iron coil, to make sure the iron coil move vertical or horizontal. We have been leader of the power frequency variable resonant system, moreover, we cooperate with famous university and research institute and improve ours quality continuously.

Principle Diagram: