Htxz-L Variable Frequency Series Resonance Voltage Withstanding Device

• Connectors: USB
• Test Mode: Instant Test
• Usage: Digital Cable Tester
• Model NO.: HTXZ-L
• Test Region: Forming Cable
• Certification: CE
• Customized: Customized
• Rated Output Voltage: 0-50kv(AC Effective Value)
• Transport Package: Wooden Case
• Specification: see details
• Trademark: HV TEST
• Origin: China
• HS Code: 9030899090
• Production Capacity: 60 Sets Per Month

Product Description

Brief Introduction

This device is special designed for AC voltage withstand test for 11kV/30MW hydroelectric generator. It is composed by frequency power source, excitation transformer, reactor, capacitance divider.

The advantages of serial resonant system: 

1.Need smaller power capacity. The power of the serial resonant system generate high voltage and high current by resonant reactor and measured capacitance, in the whole system, power source only provides the power consumption part of the system, so the required power is only 1/Q of the measured capacity.

2.Lighter and smaller volume. Without the heavy power voltage regulating device and test transformer, and excited power is only 1/Q of the measured capacity. The weight and volume are only 1/10-1/30 of the common devices.

3.Improve the output voltage waveform. Resonant power source is resonant filter circuit, which can improve the output voltage waveform distortion, get better sin wave, and effectively prevent the harmonic peak value breakdown the measured equipment.

4.Prevent the high current to burn out the fault point, for the serial resonant; the circuit will be dissonant as soon as the insulation weakness of the measured device was broken down, the loop current fast decrease to the 1/Q of the normal measured current. But for the parallel resonant or test transformer to do voltage withstand test, the breakdown current , these two compare, short circuit current and breakdown current different in hundreds times. So the serial resonant system can easily find out the insulation weakness, and do not worry about the heavy short circuit current burn out the fault point.

5.Without any recovery over-voltage. When the measured equipment was broken down, it lost the resonant conditions, high voltage immediately disappear, electric arc immediately burn out, and it is a long process to recover the voltage, easily to power off before it get to the flashover voltage another time, it is a long process, without any recovery over-voltage.

Products features 

1.The device with over-voltage, over-current, and system dissonant (flashover) protection functions.

2.Single machine light in weight, less than 40kg, convenient for field test.

3.With four working modes, convenient for customers to select, improve the measurement speed working mode: full automatically, manual control, auto tuning manual voltage boosting.

4.Can store and print the test results, convenient for customers to identify and review.

5.The scanning starting point can be set up randomly at rated range when the device auto scanning, the direction can be up or down, the LCD will show the scanning curve, convenient for customers to check if found the resonant point.

6.Adopts DSP platform technology, convenient to add or reduce the functions and upgrade according customers' requirements, make the man-machine interface be more humanization.

Technique parameters 

Rated output voltage	≤0~50kV(AC effective value)
Output frequency	45~65Hz
Resonate voltage waveform	Sine wave, distortion ≤1%
Working mode	Full power continuous working time: 5min
Quality factor	10~40
Maximum measured capacity	0.1Hz, instability<0.05%
Power supply	≤5000kVA
Rated output voltage	220Vor 380V±10%, frequency :50Hz±5%

Serial product and application:

Model	Application(AC voltage withstand test for generator which voltage ≤20kV,measured frequency: 50Hz)
	Control cabinet	reactor	Excitation transformer	Divider	Application
HTXZ-L-100/50	10kW/220V	50kV/1A:1 set	10kW/5kV	50kV/500pF	Generator 0.07~0.13uF 10kV cable(300mm^2)≤1.0km
		50kV/1A:1 set
HTXZ-L-150/50	15kW/380V	50kV/1.5A:1 set	15kW/5kV		Generator 0.13~0.2uF 10kV cable(300mm^2)≤1.5km
		50kV/1.5A:1 set
HTXZ-L-225/50	25kW/380V	50kV/1.5A:2 sets	25kW/5kV		Generator  0.2~0.27uF 10kV cable(300mm^2)≤2.5km
		50kV/1.5A:1 set
HTXZ-L-350/50	30kW/380V	60kV/2A:2 sets	30kW/5kV		Generator 0.27~0.33uF
		60kV/2A:1 set

Reference table for capacitance of common generator:

Category	Generator
	Model	Manufacture	Rated capacity MW	Rated voltage kV	Phase capacitance μF
Thermoelectric generator	T2-12-2		12	6.3	0.1
	TQ-25-2		2	6.3	0.19
	TBC-30		30	6.3	0.2
	TB2-30-2		30	6.3	0.2
	TQN-50-2		50	10.5	0.209
	TB-50-2		50	10.5	0.26
	TB-60-2		60	10.5	0.25
	TQN-100-2		100	13.8	0.234
	WT23S-083AF3		300	15	0.29
	TB-320-2		320	20	0.3
	T264/640		600	20	0.368
	QF-30-2		30	6.3	0.1
	QF-60-2		60	6.3	0.234
	QF-60-2		60	10.5	0.33
	QFS-125-2	Shanghai motor maker	125	13.8	0.08-0.12
	QFSN-200-2	Harbin motor maker	200	15.75	0.19-0.21
	QFQS-200-2	East motor maker	200	15.75	0.1928-.021
	QFS-300-2	Shanghai motor maker	300	18	0.16-0.2
	QFSN-300-2	Shanghai motor maker	300	18	0.18-0.2
	QFSN-600-2		600	20	0.234
	ATB-2	US GE	352	23	0.268
	TBB-200-2	formerSoviet Union	200	15.75	0.107
	TBB-500-2		500	20	0.25
	TBB-320-2	formerSoviet Union	320	20	0.31
	TBB-800-2		800	24	0.25
	2-105*234	US Westinghouse company	600	20	0.2
	50WT23E-138	ABB	600	22	0.253
synchronous condenser	TT-15-8		15	6.6	0.108
	TT-30-6		30	10.5	0.2

 
Note: make the solution according the measured equipment. 
Reference table for capacitance of common hydroelectric generator:

Category	Parameters of the generator
	Rated capacity (MW)	Rated voltage (kV)	Phase capacitance (μF)
Hydroelectric generator	72.5~85	10.5	0.694
	125~150		1.8~1.9
	300	15.75	1.7~2.5
	400	18.0	2~2.5
	600		2.1~2.5

 








Common problem
1. Is your company a sales company or a manufacturer?
Wuhan Huatian Electric Power Automation CO., LTD.is an industrial and trade enterprise, with its own  factory, self-produced and self-sold. We were founded in 2004 and have fifteen years of production experience. Our company has reliable production lines, test rooms and R&D centers.

2. Whether the goods are in stock, whether they can be customized, and how long the delivery time is.
After the goods have been ordered, we can be made to order according to the special requirements of customers by using the latest technology. The delivery time is usually within 10 working days if there are no accidents.

3. Is the quality guaranteed?
In order to ensure quality, we use imported components in large quantities. After three times of quality inspection, the goods can be sent out, and the export is uniformly packed in non-fumigation wooden boxes.

4. What are the after-sales terms?
We offer free consulting service, one year warranty, and adopt various methods such as email communication, video calls, technology door-to-door, aiming to solve any after-sales problems in a timely manner.

5. What are the cooperative countries or regions?
Products have been successfully exported to the United States, Brazil, Australia, Russia, the Netherlands, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Japan and other countries and regions. In the United States, India, Vietnam and other regions have cooperative distributors, can provide thoughtful services.


Contact us

Wuhan Huatian Electric Power Automation CO., LTD

Address: T4, No. 1, High-tech 2 Road,East Lake High-tech Development Zone,Wuhan
Zip code: 430074
Tel:[phone]
Fax: [phone]