ZX119-2 type, ZX119-4 type standard adjustable high resistance box

1. Overview - Type standard adjustable high-resistance box is developed and produced based on the - Insulation Resistance Meter (Megohmmeter) Verification Regulations and - DC Resistor Verification Regulations and other relevant documents. The device is designed with independent leakage shielding terminals and grounding terminals to fully meet the requirements of the - Insulation Resistance Meter Verification Regulations and - DC Resistor Verification Regulations. It can not only be used to calibrate various types of pointer insulation resistance meters, but can also be used as a standard for calibrating digital insulation resistance meters, insulation resistance testers, and as a DC standard high-value resistor. It has a long technical life and mechanical life.
2. Main technical parameters
. Accuracy level and working voltage (current) of high voltage and high resistance box
<= dd resistance value
Accuracy level
.< br/> Nominal voltage





<= dd resistance
Accuracy level
.
.
.
.
.
Nominal voltage/current
.
. Measuring range: ~Adjustment fineness:
. Use Environmental conditions
. Reference temperature range: ~℃
. Nominal operating temperature range: ~℃
. Reference humidity range: ~%
. Nominal usage humidity range: ~%
. Variation limit: variation caused by changes in a single influencing quantity under reference conditions:
<= dd influencing quantity
Nominal usage Range
Allowable variation
Ambient temperature
～℃
/ %
Relative humidity
%～%
/%%
Working voltage
(~/) Nominal voltage
/%%
★ It is the accuracy level of the resistance disk of the high voltage and high resistance box (the value of each resistance disk is different)
. Insulation resistance
The insulation resistance between the circuit of the high-voltage high-resistance box and any other external metal not electrically connected to the circuit shall not be less than the resistance value measured at the nominal voltage.
． Insulation strength
The circuit between the high-voltage high-resistance box and the test reference ground point should be able to withstand the actual sine wave AC voltage with a frequency of ~ and last for a long time without breakdown or arcing.
. The residual resistance at the output end of the high-voltage and high-resistance box ＜.its deterioration＜.
. Dimensions:
. Weight: <