1 ZC93 type insulation sheet Summary
This instrument is suitable for measuring the insulation resistance of various motors, transformers, cables, telecommunication components, household appliances and other electrical equipment. It has the advantages of convenient operation, scale calibration clear and rapid reading and stable work. This instrument to carry out JB/T9290 "Industry standard" insulation resistance meter.
2 ZC93 type insulation sheet Specification and technical characteristics
Two point one Specifications, rated voltage, error, measurement range and basic error.
Two point two The characteristics of products
A The power supply for electric meter Two hundred and twenty V, without hand.
B There are multiple choice test voltage.
C The meter is equipped with a screen end button, to ensure the correct reading.
D Full range can set the alarm value of insulation resistance.
Two point three The conditions of use
temperature Zero C ~ Forty C
relative humidity 25% ~ 80%
No fungi, insects, salt fog, dew and slight dust and sand.
Two point four Scale arc length: About 100mm
Two point five Size One * B * H , Mm : Two hundred and seventy-five * Two hundred and forty * One hundred and forty
Two point six Weight: 3.5kg
3 ZC93 type insulation sheet The structure and working principle
Three point one Working principle
The meter is made DC - DC DC power converter and DC high voltage stable output, two groups of different measuring voltage by switch. Indicator on the measuring circuit to indicate the measured value of insulation resistance, and sent to the comparator to compare with the preset value. If the measured value is less than the set value, then the alarm.
Three point two The instrument function key layout
One "Insulation resistance" indicator Two The "measure" indicator
Three The "alarm" button Four The alarm adjusting potentiometer
Five "Unqualified" indicator Six The "power switch"
Seven Measuring end Eight Voltage selection switch
Nine "Measurement / stop switch
One "Zero". Two Alarm output interface
Three Nameplate Four Power socket ( Fuse 2A)
4 ZC93 type insulation sheet Safety precautions
Four point one Read the instructions before use, and follow the instructions step in operation.
Four point two Do not use non original accessories, in order to avoid danger.
Four point three Wire terminal and the measured connection can not use wire, should be separately connected, not due to poor insulation and wire readings.
Four point four Fully discharge the measurements before and after the object to be measured must, in order to protect the equipment and personal safety.
Four point five In the use of set alarm function, when the measured insulation resistance and set value, will alarm intermittent phenomenon, this is the critical state of alarm.
Four point six We should try to avoid severe vibration, lest the instrument shaft tip bald or gem rupture, impact test.
Four point seven Prohibited in the lightning or in adjacent conductor equipment with high voltage measurement, only when the device is not charged may be affected by other power induction and charged to.
Four point eight The instrument should be placed in a fixed place when not in use, should be placed in dirty and wet places and corrosive air (e.g.
Acid and alkali vapor), in order to avoid internal coil, components and other parts of moisture, rust, corrosion and other phenomena.
5 ZC93 type insulation sheet Operation and use
Five point one Preparing for use
5.1.1 According to the required test voltage to voltage selection switch to the required voltage.
5.1.2 Clockwise "alarm adjustment potentiometer in the end.
5.1.3 Mechanical zero adjustment ( Infinity point ) Using a screwdriver, rotate the insulation resistance indicator below white ( Half round ) Zero is the pointer and scale for the dividing line point indicator.
Five point two Set the alarm insulation resistance
Turn on the power, the "measurement / stop" switch on "stop" position, press the "alarm" button and counterclockwise "alarm adjustment potentiometer with slotted screwdriver, and observe the insulation resistance indicator, when the pointer to the object to be measured to stop rotating alarm adjustment potentiometer electric insulation resistance alarm when ( The dividing line for high voltage meter resistance range, under the dividing line for low voltage resistance range ) Then, let go of the "alarm" button, which is set to complete. In the test process, do not adjust the "alarm adjustment potentiometer. If you need to change the set value, you can repeat the above steps.
Five point three Operation steps
5.3.1 With the supplied test rod short connection instrument" E "And the" L "side, then turn on the power," measurement / stop "switch to" measure "position to observe the insulation resistance indicator pointer is pointing to zero, otherwise can be adjusted carefully on the instrument panel is adjusted to zero potentiometer insulation resistance indicator pointer and zero overlap, completed after a zero adjustment then," measurement / stop "switch to" stop "position.
5.3.2 According to the measured object, according to the 5.3.3 The corresponding figure in wiring requirements. Then the "measurement / stop" on the "measure" position.
A Does not use the alarm setting function: at this point, the insulation resistance of insulation resistance value in the indicator pointer is the measured value of insulation resistance.
B Such as the use of alarm setting function: when the insulation resistance is greater than the set value showing the value of insulation resistance indicator pointer, a measured object for qualified products; when the insulation resistance value in the indicator pointer is less than the set value, the instrument will alarm a measured object is unqualified. The instrument panel alarm output interface PIN1 and PIN2 The contact is closed.
5.3.3 connection
A In the determination of insulation, both ends can be measured on the instrument respectively " E "And" L "Two on the terminal, can be measured
Resistance value. The insulation resistance measurement wiring
B On the ground of analyte determination of insulation, the measured object grounding terminal instrument" E "On the terminal, and the other end is connected with the instrument" L "On the terminal. Grounding analyte determination wiring insulation
C The cable core insulation shell on the determination of cable, the cable core shell and cable are respectively connected with the instrument" L "And" E "Two
Line column, then the inner layer between the cable insulation shell core grounding shielding instrument " (G) "In order to eliminate the measurement error caused by surface leakage. The cable core insulation shell and cable wiring determination
6 common faults and troubleshooting
Six point one After power on, the power indicator light is not bright
Check the power line plug is seated, and then check whether the power fuse is damaged, such as the fuse, the fuse can be replaced by the same type.
Six point two Press the "measure" switch to "measure" the light does not shine.
6.2.1 The measured resistance, if the header indicating, "measuring" indicator light does not shine, can check the light emitting diode is damaged, such as damage to the light emitting diode can be replaced by the same type.
6.2.2 The measured resistance, if the header without indication, "measuring" indicator light is not bright, the board 12V The power supply is damaged, can be replaced Seven thousand eight hundred and twelve .
Six point three Press the "alarm" button to rotate "alarm adjustment potentiometer, the header does not move. Check the "alarm" button is intact, the alarm adjusting potentiometer is disconnected, if damaged, can replace the same button and potentiometer.
Six point four If the above fault cannot be excluded or have other questions, please contact directly with the company.
Seven calibration
Seven point one Mechanical zero calibration at infinity.
In the absence of the power supply is switched on, such as insulation resistance meter pointer indicator and scale index line control point do not coincide, using a screwdriver turn indicator in white below ( Half round ) Zero is the pointer and scale for the dividing line point indicator, then the instrument mechanical zero point calibration end at infinity.
Seven point two Rated voltage calibration
The electrostatic voltmeter is connected to the instrument L , E Both ends of the power supply is switched on, respectively set "voltage" to open a different position, and the successive "measurement / stop" switch to "measure" position, and then observe the insulation resistance indicator pointer is pointing to the table One Corresponding to the rated voltage range of error ( High voltage range scale index line read superscript, subscript read low voltage range scale dividing line ) . If the pointer is not in error range is adjustable on the printed circuit board RP To meet the requirements of the potentiometer.
Seven point three Resistance calibration
According to the rated voltage range, select the table Two The corresponding resistance meter L , E Both ends of the power supply is switched on, and "measurement / stop" on the "measure" position indicator pointer pointing to observe the insulation resistance or resistance and access values are the same, if not, it can be adjusted on the printed circuit board RP
Two Potentiometer.
Rated voltage V
Medium resistance M Omega
Seven point four Electrical Zero Calibration
The instrument L , E Both ends of the short circuit, the power supply is switched on, "measurement / stop" switch on "measure" position, such as insulation resistance meter pointer indicator and scale index line zero does not coincide, adjustable rear "zero" potentiometer, the pointer and zero overlap. Above Seven point three , Seven point four Repeat several times to be adjusted, the value does not change, can be considered the end of the calibration. Note: for the basic error criteria for calibration should be greater than the accuracy of the project participants 1/3 .
Eight Complete instrument
ZC93 A type of insulation resistance meter
A power line
A pair of test bar
Use a manual
A certificate
Nine Other
Nine point one The instrument in the transport and use, should be careful to avoid severe long-term vibration.
Nine point two The instrument should keep the temperature indoors for Zero C ~ Forty C, relative humidity of not more than 80% In the air, and should not contain enough to cause corrosion of harmful impurities.
Nine point three Since the date of purchase instrument users Twelve Within a month, when the user fully comply with the instructions specified in the rules of use, and the user does not attempt to change the internal structure of the instrument case, found that the instrument is not working properly, then the manufacturer should be responsible for free to replace or repair.
Nine point four Factory has the right to make changes without notice to the instrument.