BR8 Standard capacitorDetailed product description：

BR8 standard capacitor

Main purpose and characteristics:
The working standard for capacitors used by metrology departments and laboratories.

Technical parameters of BR8 standard capacitor

1、 Purpose:
BR8 standard capacitor is a precision mica standard capacitor. Can be used in working circuits with AC frequencies ranging from 100 to 10000 Hz as a standard capacitor for measurement or as a standard capacitor component for AC bridge circuits and other measurement circuits.
Suitable for working in environments with air temperature ranging from+10 ℃ to+35 ℃ and relative humidity ranging from 30% to 80%

2、 Main technical characteristics

model	BR8-1	BR8-2		BR8-3	BR8-4
Nominal value (μ F)	zero point zero zero one	zero point zero one		zero point one	one
Basic error	≤±0.5%	≤±0.2%
Loss tangent value	<1×10-3	<5×10-4
temperature coefficient	≤5×10-5/℃
Annual stability	≤ 1 × 10-4/year
Voltage effect	≤1×10-6/V
Insulation resistance between two terminal knobs (M ohms)	>1×104		>1×103			>2×102

The conditions in the basic error column of the above table are:
Air temperature+20 ± 2 ℃, relative humidity 30-80%, operating current frequency 1000 ± 20 Hz, voltage 50 volts AC RMS.
The rated operating voltage of capacitors in this standard is 50 volts AC RMS. DC withstand voltage of 500 volts.
Dimensions 110 × 110 × 100mm
Weight: Approximately 1 kilogram
3、 Structure
This capacitor mica sheet is made of selected and processed muscovite, which is printed with silver and baked at high temperature; After multiple moisture immersion treatments and repeated aging of the core group, the capacitor is fully sealed in a metal container. Therefore, this standard capacitor has strong moisture resistance and annual stability.
The entire electrical part of the BR8 standard capacitor is installed on a metal panel, and its casing is a wooden box with electrostatic shielding. Led out on the panel by two terminal buttons "1" and "2", the dedicated terminal button "0" is shielded. When in use, it can be arbitrarily connected into a two terminal or three terminal working circuit.
4、 Instructions for use
When measuring, a two terminal or three terminal connection circuit can be connected. When using a two terminal connection circuit, the correction values of distributed capacitors C10 and C20 need to be considered. When connecting capacitors to the working circuit, the calibration value introduced by the capacitance of the connecting wires should be considered.
5、 Storage and Guarantee
1. This instrument should be stored at room temperature+0 ℃~45 ℃ with a relative humidity of 30~80%. There should be no gases or harmful impurities in the air that can cause corrosion. 2. Under proper use and maintenance, we guarantee a usage period of 18 months from the date of manufacture.