1 800 665 7301 | info@tmetrix.com

Discount Products: Look through products available for a 25% – 50% discount in 2020. The items provided on a first come, first serve basis.
View Discounted Products

PEARSON ELECTRONICS MODEL VD 305A CAPACITIVE VOLTAGE DIVIDER (for use in air)

PEARSON ELECTRONICS MODEL VD 305A CAPACITIVE VOLTAGE DIVIDER (for use in air)

Model #

Max
Pulse
Voltage

(in oil)

Max
Pulse
Voltage
(in air)

Voltage
Division
Ratio

(in oil)

Freq
Range
(1MΩ Load)
Droop
Rate
(per µsec)
Usable
Rise
Time
Capacitance
(approx)
VD-305A-AIR 50kV   5000:1 70Hz ~ 4MHz 0.05% 100ns   8pf

 

REQUEST A QUOTE



Description

The Model VD-305A capacitive voltage divider is intended for the measurement of voltage amplitude and wave-shape of ac signals at high potential. It has a nominal division ratio of 5000:1, and the exact measured ratio is printed on the name-plate. This ratio is measured in air at 22o C, and is accurate to ±5%. The division ratio is temperature compensated to ±1% over the range of 20o to 80o C. PEARSON ELECTRONICS MODEL VD 305A

 

The unit consists of two capacitors connected in series. The high voltage center electrode forms a capacitor with a guarded pickup ring located in the lower metal cylinder. This pickup ring is connected to the center conductor of the output connector via a 50Ω resistor. The low-voltage capacitor connects the pickup ring to the outer conductor of the connector. The output voltage is thus a fraction of the input voltage determined by the ratio of the capacitances.

 

The maximum pulse voltage rating for use in air is 50 kV. This rating is for pulses up to 5 µseconds duration. Consult Pearson engineering for voltage derating for longer pulses.

 

As manufactured, the outer conductor of the connector is isolated from the case. Safe operation requires that a connection be made from the connector shell to ground. However, this isolation makes it possible to choose the location and nature of this connection so that ground loops may be controlled.

 

The conductor connecting the high voltage to the voltage divider should be free of sharp points or edges, and of sufficient diameter to avoid corona and arcs. The outer conductor of a standard coaxial cable, such as RG-58, works well. The conductor should be located as far as possible from the acrylic chimney and any grounded conductors such as the case or the output cable. Occasional arcs usually do not cause damage to the unit. However, if sustained arcing causes visible damage to the acrylic chimney, the unit should be returned for repair. The screws which attach the chimney to the base also hold the guard ring and should not be removed by the user. The VD-305A can be secured to a base-plate or tank bottom with 1/4 inch bolts or studs. Two four-place bolt circles are provided. The smaller diameter circle is compatible with early units.

 

VD-305A_air-2_1

 

 

Reviews

There are no reviews yet!

Be the first to write a review

*

Contact ACA TMetrix Inc.

Address

3585 Laird Road, Unit 15 & 16, Mississauga ON L5L 5Z8

Phone: 1-800-665-7301

Fax: 1-905-890-1959

Email: info@tmetrix.com

About ACA TMetrix Inc.

ACA TMetrix Inc. is a leading supplier of test instruments and design tools in Canada. For over 50 years we have provided services and support for products that are manufactured by the world's leading instrument suppliers.

TMetrix Ltd. is Part of the ACA Group of Companies. Allan Crawford Associates (ACA), is one of Canada's largest distributors of electronic components, test equipment, and scientific solutions.

Our Location

Top