Product Overview
With the development of the power system, the capacity of operating equipment has increased significantly, such as thermal power generation units, with individual capacities exceeding 1000MW, and hydroelectric generating units, with individual capacities reaching 800MW. For the AC power frequency withstand tests of these equipment, using traditional testing equipment (i.e., power frequency test transformers) is cumbersome due to the large capacity required for the tests, making the transformers and voltage regulators quite heavy. It's also challenging to find a large-capacity test power source on-site, and field testing is not convenient. The power frequency resonance device offers significant advantages in terms of test power source capacity, equipment weight, test waveforms, and investment.
The TPXB-E adjustable-tensioning frequency-series resonance withstand voltage device is primarily designed and manufactured for AC withstand tests of hydroelectric generators with single-unit capacity of 250MW or less.
Product Alias
Power Frequency Resonance, Series Resonance, Series Resonant Transformer, Series Resonance Test Equipment, Tuning Inductance Power Frequency Resonant Voltage Withstand Device, Power Frequency Resonance, AC Voltage Withstand Test for Power Frequency, Series Resonance at Power Frequency, Series Resonance, Series Resonant Transformer, Series Resonance Test Equipment, Alternator AC Voltage Withstand Resonant Boosting Device, Voltage Withstand Test Equipment, Alternator Voltage Withstand Test Equipment, Alternator AC Voltage Withstand Test, Alternator Voltage Withstand Test, Alternator Voltage Withstand Test Equipment, Alternator Series Resonance Device
Product Features
1. Due to resonant reactive power compensation, the power of the power supply and equipment is only 1/10th or less (1/Q10) of the tested item's capacity. The same capacity is smaller in volume and lighter in weight, with a larger output capacity and a smaller required power supply capacity, making it cost-effective, easy to operate, and safe.
2. Series resonant actually forms a current filtering circuit, ensuring that the current passing through the tested item is predominantly the fundamental frequency current. The output voltage waveform distortion rate (THD) is lower, outperforming all existing types of AC voltage withstand equipment.
3. Short-circuit current after flashover or breakdown is less than 1/10 (1/Q) of the test current before short-circuit, which can effectively prevent the damage to the fault point from expanding after breakdown.
4. The process of voltage restoration to establish resonance after immediate automatic arc quenching following flashover is a stable state establishment process, which is free from concerns of voltage overshoot and the danger of recovery overvoltage from microsecond to millisecond transient processes.
Technical Specifications
Rated Output Voltage: 0～60kV (AC RMS) and below
Output Frequency: 50 Hz
Resonant Voltage Waveform Pure sine wave, waveform distortion rate ≤ 1%
Operating Schedule Full Power Continuous Operating Time: 1 minute
Quality Factors: 10-40
Large Test Capacity: Up to 3000kVA
Power Supply: 380V ± 15%, 50Hz AC
TPXB-E series frequency tuning transformer for AC series resonance voltage withstand device
Motivating Transformer EDJLB-170kVA/5kV/0.4kV 1 Unit
Rated Capacity: 170 kVA
Input Voltage: 400V, Single Phase
Output Voltage: 5 kV
Structure: Oil Type
Weight: Approximately 650 kg.
Rated rise in coil temperature after 1 minute of operation: ≤65K
TPXB-E Series Frequency Tuning Transformer Voltage Regulator with Electrically Tuned Frequency-Driven Series Resonant Voltage Withstand Device
Electrical Pressure Regulator EDTC-170kVA/380V/0~430V 1 Unit
a) Rated Capacity: 170 kVA
b) Input Voltage: 380V, Three-Phase
c) Output Voltage: 0~430V, Single Phase
d) Configuration: Single-phase electric voltage regulator
e) Weight: Approximately 900 kg.
TPXB-E Frequency-Adaptive Line Frequency Series Resonant Voltage Withstand Device Control Console
Resonant Operating Bench TPCB-E-170kVA/380V 1 Unit
Rated Capacity: 170 kVA
Input Voltage: 380V
Output Voltage: 0~420V
Protection Functions: Zero-point, overcurrent, overvoltage, and sample flashover protection.
Weight: Approximately 120 kg
TPXB-E Variable Sensitivity Line Frequency Series Resonant Voltage Withstand Device, Adjustable Reactor
Adjustable Reactor EDDKT-800kVA/50kV 1 Unit
Rated Capacity: 800 kVA
Rated Voltage: 50kV
Rated Current: 16A
Adjustable Inductance: 8H to 21H
Quality Factor: Q ≥ 30
Structure: Oil type
Weight: Approximately 600 kg.
TPXB-E Series Frequency-Adaptive Industrial Frequency Series Resonant Voltage Withstand Device High Voltage Reactor
High-voltage Reactor EDDK-450kVA/50kV 2 units
Rated Capacity: 450 kVA
Rated Voltage: 50kV
Rated Current: 9A
Inductance: 18H
Quality Factor: Q ≥ 10
Structure: Oil Type
Weight: Approximately 320 kg.
TPXB-E Series Frequency-Adaptive Line-to-Line Series Resonant Voltage Stabilizer Voltage Divider
DC/AC Voltage divider EDFC-50kV 1 unit
Rated Voltage: 50kV
Measurement Accuracy: AC RMS 1.5 Class
Medium Loss: tgσ ≤ 0.5%
Pressure Ratio: 1000:1
Pressure drop ratio error: ≤1.0%
Weight: Approximately 9kg
TPXB-E Series Resonant Voltage Compensating Capacitor for Industrial Frequency Series Resonant Voltage Equipment
Compensating Capacitor EDBC-50kV/0.5uF 1 Unit
a) Rated Voltage: 50kV
b) Capacitance: 0.5uF
c) Weight: 100 kg
