QS1A AC bridgeDetailed product description：

One Overview

QS1A AC bridge is an improved version of QS1 AC bridge. This bridge system uses advanced electronic technology and is equipped with an anti-interference circuit of a pointer type zero pointer with photoelectric isolation, enabling the bridge to accurately measure under strong electric field environmental conditions. The bridge also adds an R4/10 device, which can measure small capacitors and small dielectric losses of test samples such as transformer brackets and insulating oil.

technical parameters

working voltage	Cx limit uf	accuracy	TGD limit	accuracy	anti-interference circuit
2-10KV	0.3*10-4—0.4	±5%	0.005-1 0.03-1 0.005-0.03	±10% ±0.003	Output open circuit voltage>400V Output impedance>1M Ω Phase adjustment 0-360.

Dimensions (mm): 500 * 280 * 290 Weight (kg): 17

principle
The QS1A AC bridge is designed based on 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 box C4. When the bridge is balanced, the following relationship occurs: CX=CN * R4/R3tgd=ω R4C410-6=C4 (in uF)

III Complete set
1. The accessories supplied by 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. Complete set can be selected
(1) BR16 standard capacitor, QS1A AC bridge
(2) BR16 standard capacitor, QS1A AC bridge, one set of aluminum alloy installation box.