QS1 AC (Xilin) bridgeDetailed product description：

I. Overview

QS1 AC bridge, modeled after the Su M-16 product. Commonly known as the Xilin bridge, it is used to measure the insulation loss angle and capacitance of high-voltage equipment at high voltage, and can also be used to measure the capacitance of capacitors, cables, etc. at low voltage.
When measuring high voltage, the bridge can be connected in either forward or reverse direction.

principle
This bridge is designed according to the circuit of the Xilin bridge. Arm one is the test sample Cx, arm two is the standard capacitor CN, arm three is the variable resistor R3, and arm four is composed of a fixed resistor R4=1000/pL=3184 ohms connected in parallel with the capacitor C4. When the bridge is balanced, the following relationship occurs:
CX=CN * R4/R3tgd=ω R4C410-6=C4 (in uF)

Technical parameters of QS1 AC (Xilin) bridge

working voltage		Cx limit uf		accuracy	TGD limit	accuracy
high pressure	5-10KV	high pressure	0.3*10-4—0.4	±5%	0.005-0.6 0.03-0.6 0.005-0.03	±10% ±0.003
low pressure	100V	low pressure	0.3*10-3—100	±5%	0.008-0.6 0.03-0.6 0.008-0.03	±20% ±0.005

Dimensions (mm): 500 * 280 * 290 Weight: 15 (kg)

4、 Completeness
The accessories supplied for each bridge include:
(1) One pair of high-voltage input wires (2) and one power cord
(3) Fuses (0.5A) three (4) bulbs three
2. Selection of complete sets
BR16 standard capacitor, QS1 AC bridge
BR16 standard capacitor, SB854 power phase shifter, QS1 bridge power protection controller, QS1 AC bridge.