Vlf Cable Test Diagnostic System for Testing Midium Voltage Cables

Product Description

VLF Cable Test Diagnostic System for Testing Midium Voltage Cables

Product Description

VLF Cable Test Diagnostic System for Testing Midium Voltage Cables is designed and manufactured for electrical equipment very low frequency withstand voltage test.

Very low frequency withstand voltage test is essentially an alternative of power frequency withstand voltage test. It is much smaller, lighter and portable than power frequency withstand voltage tester. It is proved home and abroad that 0.1Hz ultra-low frequency withstand voltage test can replace power frequency withstand voltage test.

VLF Cable Test Diagnostic System for Testing Midium Voltage Cables can be applied for 10kV, 35kV, 300MW thermal power machine, 10kV, 35kV power transformer and other electrical equipment.

 

Product Parameters

Max voltage output: refer to table 1;
Output frequency: 0.1Hz, 0.05Hz, 0.02Hz;
Measurement accuracy: 2.5%;
Positive and negative voltage peak errors < 2.5%RDG+0.3%FS;
Voltage wave form distortion: <3%;
Insulation resistance measurement error: <2.5%;
Leakage current measurement error: <2.5%;
Power supply:AC220V ± 10%, 50Hz/60Hz;
Environment temperature: 0~50°C;
Humidity:≤85%RH;

 

Model	Rated Voltage/current	Load Carrying Capacity	Power fuse wire	Weight
VLF-30	30kV/20mA (Peak)	0.1Hz, 0.5µF~1.1µF	10A	Controller:6kg Booster: 35kg
		0.05Hz, 0.5µF~2.2µF
		0.02Hz, 0.5µF~5.5µF
VLF-40	40kV/30mA	0.1Hz  ≤   1.1uF	20A	Controller: 6kg Booster: 50kg
		0.05Hz  ≤   2.2uF
		0.02Hz  ≤   5.5uF
VLF-50	50kV/30mA (Peak)	0.1Hz, 0.5µF~1.1µF	20A	Controller:6kg Booster: 50kg
		0.05Hz, 0.5µF~2.2µF
		0.02Hz, 0.5µF~5.5µF
VLF-60	60kV/30mA (Peak)	0.1Hz, ≤0.5µF	9A	Controller:4kg Booster 1(30kV):25kg Booster 2(30kV):25kg
		0.05Hz, 0.5µF~1µF
		0.02Hz, 0.5µF~2.5µF
VLF-80	80kV/30mA (Peak)	0.1Hz, ≤0.5µF	12A	Controller:4kg Booster 1(30kV):25kg Booster 2(50kV):50kg
		0.05Hz, 0.5µF~1µF
		0.02Hz, 0.5µF~2.5µF

Features

Data of current, voltage and wave form can be directly sampled at high voltage side, so the data is real and accurate;

Over-voltage protection: If the output exceeds the set limit of voltage, the instrument will shut-down to protect itself; the actuation time is less than 15ms;

Over-current protection: it is high-low voltage dual protection in the design, the accurate shut-down protection can be made according to the set value at high voltage side; If the current on low voltage side exceeds the rated current, the instrument will take shut-down protection, the actuation time are both less than 15ms;

A high voltage output protective resistor is provided in the voltage boost body in the design and this eliminates the need of additional protective resistor connected outside;

As a result of high and low voltage closed-loop negative feedback control circuit, the output without capacitive rise effect;

High-voltage control part adopts innovative light control HV switching unit, control is accurate, safe and reliable;

With color man-machine interface touch control plus controls modular software operating system, precise and intuitive;

Multi-purpose, can simultaneously measure tested objects capacitance, insulation resistance, leakage current, and AC withstand voltage test;
 

Detailed Photos

Controller of 80kV VLF Cable Test Diagnostic System

Full set of VLF-80;
From left to right is: Controller, 30kV Booster, 50kV Booster, capacitor

Accessories of 80kV VLF Cable Test Diagnostic System

80kV VLF Cable Test Diagnostic System Packing in three or four veneer cases.

 

Our Advantages

1. High Quality Product: Most equipment have been on sale for more than 10 years, they are stable, reliable, with high quality and good reputation. All the products have been tested, run well and adjusted to good condition before delivery.

2. Good Faith Cooperation: Honesty is our foundation, we don't brag about the company and products, seek truth from facts, and don't make random promises.

3. Innovative Technology: Based on full experience in designing and manufacturing these equipment, and with users' feedback, we continuously improving our equipment and developing new products.

4. Awesome Service: Provide professional advice and reasonable offers within 2 hours at working time, and within 12 hours at non-working time. One year warranty for all the products, life time technical consulting, life time provision of spare parts, free software upgrades.

After Sales Service

1.    Warranty period for all products is One year;

2.    Within warranty period, all quality problems of the instrument shall be repaired by our company free of charge;

3.    Beyond warranty period, our company shall be responsible for life-time maintenance, only the cost of the accessories will be charged;

4.    User manual will be sent with the tester, some testers have demo for review.

5.    If users have question on operation, we supply on-line video training. Users can also come to our factory to get free training.