I. Introduction
HGZX92A Megger Calibration Device | Megger Calibration Instrument | Megger Calibration Device | InsulationResistorCalibration Table Device
HGZX5KA Megohmmeter Calibration InstrumentIs based on JJG1005—2005 "Electrical Insulation"ResistorTable Inspection Procedure》、JJG622—1997 InsulatingResistorTable (Megger) Calibration Procedure, and refer to the power industry standard DL/T845.1—2004 "Electrical Insulation Megohmmeter."ResistorSpecial-purpose equipment designed and manufactured in accordance with the relevant contents of the General Technical Conditions in the Table, used for the calibration of electronic insulationResistorThe indication error, drop voltage, and short-circuit current of the meter. When paired with our company's constant speed drive (CY3 model), it can be used to calibrate the indication error, open-circuit voltage, mid-value voltage, and peak voltage of pointer-type megohmmeters. It features a compact structure, stable performance, and ease of use. It is used by various industrial and mining enterprises, as well as institutions, for the calibration of various insulatingResistorIdeal equipment for watches.
Section II: Main Technical Specifications
HGZX5KV Type InsulationResistorMegger calibration device, primarily used for the calibration of various insulating materials with rated voltage ≤ 5000V.ResistorTables, also available in insulatingResistorStandard instrument for production and repair.ResistorThe instrument section can be used independently. The digital gauge section can measure up to 5000V DC voltage and up to 20mA DC current.
The main technical specifications of this calibration device are as follows:
Standard Digital Gauge
1. Measurement Range:
Voltage divided into two levels: 0~500V, 0~5000V
Short-circuit Current: 0～2 mA, 0～20 mA
2. Basic Tolerance:

 
 
 
 
 
3. The digital gauge's response time is approximately 25 seconds.
㈡ Standard ResistorVessel
1、Standard ResistorA device with a 100G fixedResistorAnd eightResistorDisc assembly
100GΩ+9×104 MΩ+10×（103+102+10+1+0.1+0.01
+0.001）MΩ，
0 to 201111.110 MΩ, step 1KΩ, high voltage resistance 5KV.
2. Grade indices for tensile disks and higher operating voltages or currents
3. ResidualResistorLess than 1Ω, tolerance not exceeding 0.1Ω.
4. Environmental reference conditions: 20+2-3°C, relative humidity: 50% ± 10%.
5. Nominal operating conditions: Temperature 23±5°C, relative humidity 25%～60%.
6. Insulation of the wire to the housingResistor≥1×10^11 Ω. 8KV test per minute.
8. Power Voltage: AC 220V, 50Hz.
9. Dimensions: 530mm x 250mm x 170mm.
Weight: Approximately 17kg.
Section 3: Panel Settings and Instructions
This calibration device consists of a standard digital gauge andStandard ResistorIt consists of two parts.
1. Standard digital meters can be used to measure voltage and current, positioned on the left of the device.
Edges are set separately for voltage and current inputs for ease of use. The central left side features an LED display with a larger display size to increase the visible distance. The digital meter measurement selection switch is located in the lower left corner, allowing the selection of different test items and measurements as needed.Range。

Panel character descriptions: Uk— Open Circuit Voltage Uf— Peak Voltage
UZ— Mid-value Voltage Ud— Drop Voltage
Id— Short Circuit Current
2、Standard ResistorVessel according toResistorA design manufactured with a series-parallel principle, the output is changed by rotating a decimal disc switch.ResistorValueResistorComponents consist of two terminals and eight switches.
OK, two terminals apart.ResistorThe value is the sum of the readings from each dial.
4. Usage Instructions
1. Insulation calibrationResistorThe indication (basic) error of the meter should be connected according to the method shown in Figure 2, then connect the electronic insulation.ResistorPower supply for the watch, start constant-speed motor to rotate pointer, insulatedResistorTables, inspect and verify insulation point by point according to the procedures and requirements of the inspection regulationResistorCalibration of the indicator error and tilt effect of the clock.

2. Insulation VerificationResistorThe connection diagram for the table's open-circuit voltage peak voltage and short-circuit current is shown in Figure 3. Simply set the "Measurement Selection" switch of this device to the appropriate position to start the test.

3. Insulation CalibrationResistorThe wiring diagram for the median (dropout) voltage of the table is shown in Figure 4. Refer to Appendices 2 and 3 to determine the tested table.Median ResistanceValue, this device'sStandard ResistorAdjust the resistor to the desired value, then set the "Measurement Selection" switch to the appropriate position for testing.

V. Usage Precautions
1. When in use, this calibration device requires an environment that meets the aforementioned requirements. The instrument must have a good grounding wire.
2. Upon extended non-use of this calibration device, it should be checked before use.Standard ResistorThe switches on the equipment should be turned back and forth from 0 to 10 (9) several times to ensure stable and reliable contact.
3. When in use, attention should be paid to the actual force appliedStandard ResistorVoltage on the device, do not exceed eachResistorPeak voltage of the plate, to avoidResistorComponents exceed specifications or are even damaged.
4. Due to the longer time constant of the digital voltmeter (approximately 25 seconds), it is necessary to stop the constant-speed motor or turn off the power to the electronic insulation meter after one measurement is completed.RangeSelect the "About Discharge" location, and then switch after the high voltage drops below 100 volts.RangeOr alter the measurement items to ensure the safety of the testers and equipment.
5. During the measurement process, if the voltmeter flickers between bright and dim, it indicates that the input voltage is too high orRangeIncorrect, or the switch position is not placed properly; it needs to be adjusted to the correct position.Range。
6. During the measurement of the product's peak voltage, zero-point compensation method is used to overcome peak sampling.
Forward voltage drop of the rectifier in the circuit. Therefore, even without an input signal, there is a certain size for the Uf range.
7. The insulation strength of the wire to the casing should withstand a 50Hz sine wave voltage.
Appendix 1

The zero in the composition is a normal phenomenon.
Special Notice: When calibrating the standard digital gauge of this device, ensure that the signal of the standard source is returned to zero by conventional means before turningRangeSelect "switch" to avoid accidental damage to the standard source.
Article VI
1. Randomly supplied documents and attachments:
Packing List     One copy
(2) Instruction Manual – One copy
(3) Product Compliance Certificate - One Copy
(4) Test Line   A Pair
(5) Power Cord - One
2. Under the condition that users comply with the storage and usage rules, if the product fails to operate normally due to poor quality within 12 months from the date of shipment from the factory, our factory will repair it for the user at no cost.
Appendix 2
JJG1005—2005 "Electrical Insulation"ResistorTable》RegardingMedian ResistanceWith the fallResistorSelection criteria:
1. The pointer-type meter measures the allowable mean voltage of the terminal.
The pointer on the analog meter should be close to the scale line with marked values near the geometric center. When this is the case, the voltage between measuring terminals L and E is the mid-value voltage, which should not be less than 90% of the rated voltage. The central scale of the analog meterResistorThe value is typicallyRange2% to 2.5% of the upper limit.
1. Allowable drop voltage for digital meters
Digital gauge displays the value provided by the manufacturer for the drop test.ResistorWhen measuring, the voltage between terminals L and E is the drop voltage.
The value should not be less than 90% of the rated voltage. The digital meter's dropResistorThe value should be within 1% of the upper limit of the basic quantity.