REED ST-5500 Скачать руководство пользователя страница 7

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Battery Replacement

1. When the battery power is not sufficient the LCD will display 

.

2. Replacement of 6 new batteries, type 1.5V size “AA” is required.
3. Once replaced be sure to reinstall the battery cover and the four 

.

screws before operating.

Measurements

Insulation Resistance Measurements

Measurements at 200MΩ/250V

This is the voltage used for the majority of insulation resistance tests on 
normal installation requirements. To measure insulation resistance, press 
the test button to turn on the tester. 
The LCD will display the insulation resistance. Section VII indicated that 
subdivision of large installations might be necessary because of the large 
number of parallel insulation resistance. In such a case, an installation 
may be divided into sections, each being separately tested. Each section 
must have at least fifty outlets, an outlet being a switch, socket, lighting 
point etc. A switched socket counts as one outlet. The minimum accept

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able insulation resistance is 1MΩ. 
For a large installation, the capacitance of the insulation will be high, and 
it will take longer for it to become charged by the direct testing voltage. 
Be careful not to take a reading until there is a steady reading, indicating 
that the charging process is complete.

Note:

 The charge stored in the insulation will be discharged automatically 

when the test button is released. Be careful not to turn the range switch 
knob while the test button is pressed, or the instrument will be damaged.

Measurements at 2000MΩ/1000V

Some specifications require testing at 1000V. This voltage must also be 
selected where the supply voltage of the installation is between 500V and 
1000V. First, set the range switch to 1000V and then proceed as indicated 
in above for 500V testing. 

continued ...

 

REED Instruments

1-877-849-2127 | [email protected] | www.reedinstruments.com

Содержание ST-5500

Страница 1: ...reedinstruments www com Model ST 5500 Digital Insulation Tester Instruction Manual REED Instruments 1 877 849 2127 info reedinstruments com www reedinstruments com...

Страница 2: ...k the test leads 7 Battery replacement 7 Measurements 7 8 Insulation Resistance Measurements 7 Low Resistance Measurements 8 AC DC Voltage Measurements 8 Power Tool Small Appliances 9 Motors 9 Cables...

Страница 3: ...may be impaired Read the operating instructions before use and follow all safety Information Caution when working with voltages above 60V DC or 30V AC RMS Such voltages pose a shock hazard Before tak...

Страница 4: ...k 200M 250V 200M 500V 2000M 1000V 750V ACV 1000V DCV Sampling Rate 2 5 times per second Zero Adjustment Automatic adjustment Over Range Indicator Number 1 of highest digit is displayed Low Battery Ind...

Страница 5: ...urrent 200mA DC Voltage Range Resolution Accuracy Input Impedance Overload Protection 1000V 1V 0 8 3 10M 1000Vrms AC Voltage 40Hz 400Hz Range Resolution Accuracy Input Impedance Overload Protection 75...

Страница 6: ...lack lead into the COM terminal 2 On 200 and ACV Range Connect the red test lead into the V terminal and the black lead into terminal COM How to check the test leads Set the range select switch to the...

Страница 7: ...t have at least fifty outlets an outlet being a switch socket lighting point etc A switched socket counts as one outlet The minimum accept able insulation resistance is 1M For a large installation the...

Страница 8: ...ton Set the LOCK button to lock test voltage pressing it again will turn the tester off Low Resistance Continuity Measurements 1 Set the range switch to 200 Position 2 Connect the red test lead to the...

Страница 9: ...the motor wire and all other components be tween the motor and the main switch If a weakness is in dicated the mo tor and other components should be checked individually If the motor is disconnected...

Страница 10: ...ecting one megohmmeter lead to a ground and or lead sheather and the other megohmmeter lead to each of the conductors in turn Check insulation resistance between conductors by connecting megohmmeter l...

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