Portable Surge Protective Device Tester Model SPD

888 Tester

User Manual

Safety Precaution

This tester can produce up to 1000V testing voltage. To obtain accurate performance and prevent injury , please follow the safety instructions below£º

1£®Before the ¡°TEST¡± button is pressed, make sure the tester connection with testing component is complete.

2£®During the ¡°TEST¡± button is pressing, do not touch the testing component and the cable of the tester.

3£®After the ¡°TEST¡± button is released, wait for about 5 second before touching any component.

4£®Short circuit the testing rods before and after each test.

5£®DO not press the ¡°TEST¡± button when no testing component connected.

6£®Make sure the batteries in the tester are in correct polarity

7£®Remove the batteries for long-time storage.

8£®When LCD Display shows ¡°LOBAT¡±, it mean low battery supply, battery replacement is necessary. Otherwise, accuracy of measurement will be affected and the internal circuit of the tester may not fully operate.

Packaging

The SPD Tester Box set includes the following items:

Table 1 SPD 888 Tester Item List   ITEM Quantity 1 SPD 888 Tester 1 2 Tester Bag 1 3 1.5 V LR6 Alkaline Batteries 4 4 E-manual 1

Introduction

Surge Protective Devices Tester, SPD 888 Tester is designed for on-site testing of Surge Protective Devices (SPD). It allow to measures both the Nominal Voltage and Leakage Current of different SPDs. Users can determine the status of these components according to the tester readings.

The tester can measure both type of main component inside SPDs, including:

a)Voltage Limiting Type (MOV, TVS, Zener Diode ) The SPD tester injects a constant current into the component and measure the Let-Through Voltage. Then, the tester can use this voltage to find out the leakage current of the component.

b)Voltage Switching Type (Gas Discharge Tube, Solid Discharge Tube, Spark Gap) The SPD tester injects a constant current into the component and measure the Break Down Voltage of the component. What the tester outputs is slope of 10V/ms voltage not a constant current

Standards, applicatio

nsThis Tester is made with reference to IEC 61643 part 1 and part 21

IEC 61643 ¡°Surge protective devices connected to low voltage power distribution system¡±
Part 1:      Performance requirements and testing methods. Class I and II tests

IEC 61643 ¡°Surge protective devices connected to telecommunications and signaling networks¡±
Part 21:     Performance requirements and testing methods

Specification

Control Function

1.Output Terminal:

RED : Positive

Black  : Negative

2.LCD Display

3.Test-Voltage Range Selector ¡°(VS)¡±Range:

(i) 600V

(ii) 1000V

4.Voltage Adjustment Switch ¡°(VA)¡±

5.Operation Mode Selector ¡°(OM)¡±Mode:

(i) UN:Nominal Voltage Measurement

(ii)VA:Test-Voltage Adjustment

(iii)Ileak: Leakage Current Measurement

6.¡°TEST¡± button.

Operation Procedure

1.   Connection

1.1    Connect the red and black tester rods to the output terminal. Then, short circuit the tester rods.

1.2    Open the battery cover and insert four 1.5V LR 6 Alkaline Batteries into the tester. Make sure the batteries are in correct polarity.

2.   Testing

2.1 For the conducting voltage measurement of an unknown SPD (including Voltage Switching Type and Voltage Limiting Type component)£º

¡ø Turn the Operation Mode Selector, ¡°(OM)¡± to ¡°UN¡± position.

¡ø Press the Test-Voltage Range Selector, ¡°(VS)¡± switch to ¡°600V¡±.

¡ø Connect the component by the two tester rods.

¡ø Press the ¡°TEST¡± button for 2 second until the LCD display a numeric reading with Unit ¡°V¡±.

Attention:

¡ø 

1 If the LCD reading exceeds 600V,it means that the Let-Through  Voltage is larger than 600V. It is required to press the ¡°(VS)¡± to the ¡°1000V¡± side and test again, after the internal buzzer produces a ¡°Beep¡± sound, release the ¡°TEST¡± button.

The reading is the Nominal Voltage---for Voltage Limiting Type Component (e.g. MOV). If the component is Voltage Switiching Type Component (e.g. Gas Discharge Tube), the reading is Break Through Voltage.

2 If the LCD reading is smaller than 600V, it means ¡°(VS)¡± selection is correct, reading is valid.

3 If no ¡°Beep¡± sound after the ¡°TEST¡± button is pressed, it means the current across the MOV is smaller than 1mA or the Gas Discharge Tube does not reach the Break Down Voltage. So the reading is invalid. Please check ¡°(VS)¡± if it is pressed to ¡°1000V¡± or the output terminal is open-circuit.

2.2 For the measurement of known SPD Nominal Voltage

¡ï Switch ¡°(OM)¡± to ¡°VA¡± position.

¡ï According to component Nominal Voltage, If it is smaller than 600V, then press the ¡°(VS)¡± to ¡°600V¡± position; If it is larger than 600V then press the ¡°(VS)¡± to ¡°1000V¡± position.

¡ï Connect the tester to the testing component by the tester rods¡£ Press the ¡°TEST¡± button, until the buzzer produces ¡°Beep¡± sound, LCD shows the stable value with the unit ,¡°V¡±, then release the ¡°TEST¡± button.

¡ï   Attention£ºFor Nominal Voltage measurement, the reading is valid only after the ¡°TEST¡± button is pressed for more than 2 second with the ¡°BEEP¡± sound as indication from the tester buzzer. Otherwise, the reading is invalid.

2.3 Leakage Current Measurement

¡ô Connect the testing component to the tester by the two testing rods.

¡ô     Turn ¡°(OM)¡± to ¡°VA¡± Position¡£

¡ô     According to the preset testing voltage, turn the adjust ¡°(VS)¡± to a suitable position£ºIf the testing voltage is smaller than 600V, turn ¡°(VS)¡± to ¡°600V¡± position. For more than 600V, turn ¡°(VS)¡± to ¡°1000V¡± position¡£

¡ô     Press the ¡°TEST¡± button, adjust the ¡°VA¡± button (Clockwise: Increase,

¡ô     Aclockwise: decrease) until the display value equal to the preset value, then release the button.

¡ô     Switch ¡°(OM)¡± to ¡°ILead¡± position and press the ¡°TEST¡± button, The LCD display the leakage current£¨¦ÌA£©of the testing component.

Attention£º

1 The maximum reading for leakage current is 199.9¦ÌA. For reading larger than 199.9¦ÌA  will only display a ¡°1¡± on tester LCD.

2 ¡°There are no beep sound indication on operation mode ¡°(OM)¡± on ¡°VA¡± and ¡°ILead¡± position.

Procedure for Battery Placement

The tester uses four 1.5V LR 6 ALKALINE batteries as power supply. When the LCD shown the  ¡°LOBAT¡±, it is necessary to replace the batteries..

Here is the procedure:

1. Remove the tester rods;

2. Screw up the screws at the back of the tester;

3. Open the battery cover;

4. Remove the old batteries;

5. Install the new batteries; screw the battery cover back to the tester;

Maintenance and Repair

To make sure each measurement is accurate, keep the tester away from : shock¡¢corrosive gases, salt and high temperature, etc.

¡ï After testing, remove the tester rods and bring all things back to the tester box. For long time not using the tester, please remove the batteries¡£

¡ï If the LCD display ¡°LOBAT¡± after pressing the ¡°TEST¡± button, it mean low battery supply, please replace the battery.

If the tester requires maintenance, please contact the supplier, they will bring the tester back to the technical service centre for further inspection.

Troubleshooting

Measurement Inspection Method

The following method suitable for the tester after periodic check or maintenance

1.    Check for Output Voltage Accuracy

(1) Turn ¡°(OM)¡± to ¡°VA¡± position, connect the output terminal to a standard voltmeter.(Red Terminal: positive pole; Black Terminal: Negative Pole)

(2) Press the ¡°TEST¡± button and adjust the ¡°(VA)¡± button, compare the LCD reading with the reading on the voltmeter. Check if the different in reading is inside an acceptable range of error percentage.

2.    Check for the error of Constant Current

(1)Turn ¡°(OM)¡± to ¡°Un¡± position, connect the output terminal with a standard resistor (error ¡À 0.5%).

(2)Press the ¡°TEST¡± button, read the reading on the LCD until ¡°BEEP¡± sound from the buzzer. Obtain the current value(Reading Voltage/Standard Resistance) if it is equal to the constant current value(1mA) from the tester, error should be smaller than ¡À 5%.

3.    Check for the measurement error of the Leakage Current

(1)Turn ¡°(OM)¡± to ¡°ILeak¡± position, Connect with standard resistor 10M¦¸ ¡À 0.5% to the output terminal.

(2)Press the ¡°TEST¡± button. Adjust ¡°(VA)¡±until the LCD display a suitable current value (¦ÌA).

(3)Measure the voltage across the resistor by voltmeter. Obtain the leakage current value (Voltage on voltmeter/Standard Resistance).

(4)The different between the LCD reading and the value obtained on previous step should smaller than ¡À 2% + 5 digit.