QS37a High voltage capacitor bridgeDetailed product description：

QS37a is mainly used to measure the tangent value and capacitance of the dielectric loss angle of high-voltage industrial insulation materials. It adopts the classic circuit of Xilin bridge. It can mainly measure the dielectric loss (tg δ) and capacitance (Cx) of various electrical oils and solid insulation materials such as capacitors, transformers, and transformers under high power frequency voltage. The measurement line adopts the "positive connection method" to measure the insulation of the test sample to the ground. Due to the presence of a 2500KV high-voltage power supply and a high-voltage standard capacitor inside the bridge, and the organic combination of the secondary bridge and ammeter with the high-voltage bridge, this bridge is particularly suitable for measuring the dielectric loss (tg δ) and dielectric constant (ε) of various insulating oils and materials.
The bridge itself has a standard capacitor of 5kV/100pF, making it more convenient to measure the dielectric loss of the material.
The bridge body is equipped with a potential tracker and indicator, with few peripheral wiring.
The bridge body adopts diversified dielectric loss measurement lines.

Measurement range and error
When Cn=100pF R4=3183.2 (Ω) (i.e. 10K/π)

measurement project	measurement range	measurement error
Capacity Cx	40pF--20000pF	±0.5% Cx±2pF
Dielectric loss tg δ	0~1	±1.5％tgδx±1×10-4

When Cn=100pF R4=318.3 (Ω) (i.e. 1K/π)

measurement project	measurement range	measurement error
Capacity Cx	4pF--2000pF	±0.5% Cx±2pF
Dielectric loss tg δ	0～0.1	±1.5％tgδx±1×10-4

Cx＝R4×Cn/R3
tgδ＝ω·R4·C4
Technical characteristics of high-voltage power supply
Voltage output: 0-2500V/50Hz
High voltage current output: 0-20mA
Built in standard capacitor
The nominal value of capacitance is 100pF
TG δ is less than 5 × 10-5