Voltmeter
Conventional insulation testers are highly susceptible to damage when testing insulation resistance while voltage is present on the measured object (whether ACV or DCV). To safely prevent damage, the SEW 6305IN has the unique ability to sense voltage on a measured object. If any voltage is sensed, the tester will automatically switch to voltage detection mode and display the voltage finding on the LCD screen. This allows the user to prevent damage caused by attempting to measure insulation resistance while voltage is present.

DAR = Dielectric Absorption Ratio
The Dielectric Absorption Ratio is the ratio of the insulation resistance measured at 1 minute divided by the insulation resistance measured at 30 seconds. Thirty seconds after starting a test, SEW 6305IN will beep, indicating that the resistance value measured at 30 seconds has been saved. One minute after starting a test, the tester will beep again, indicating that the DAR result has been computed. The display format then changes to display the DAR result.

PI = Polarization Index
The Polarization Index is the ratio of the insulation resistance measured at 10 minutes divided by the insulation resistance measured at 1 minute. One minute after starting a test, the resistance value is saved and the DAR is displayed. The test then continues, and after 10 minutes, the SEW 6305IN will beep again, indicating that the PI result has been computed. The display format changes to display the PI result.

Note: Tests on lower insulation resistance take longer, which tends to deteriorate the test specimen. Thus, higher DAR or PI readings (closer to 1) would indicate a better grade of insulation.

SEW 6305IN 5kV HIGH VOLTAGE INSULATION TESTER SPECIFICATIONS:

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RCD’s also protect against fire caused by faults in appliance, tools and wiring. If these faults go undetected they could cause a fire or personal injury. RCD’s provide a means of early fault detection.

SEW 8012EL Microprocessor Controlled RCD Tester Features:

● Menu-driven.
● Accurate digital readout of disconnection time.
● Over temperature protection.
● Over voltage protection.
● Fuse protection.
● Zero crossing circuitry permit testing at 0° or 180°.
●Extra large LCD(78 × 67mm).
● Very low consumption.
● 50Hz and 60Hz operation
● Auto power off.
● Auto off and off override.
● Wiring polarity indicator.
● Measure voltage between Line and Earth before testing.
●Frequency measurement indication.

SEW 8012EL Microprocessor Controlled RCD Tester Specifications:

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Earth fault loop impedance is the path followed by fault current when a low impedance fault occurs between the phase conductor and earth, i.e. “earth fault loop”. Fault current is driven round the loop by the supply voltage. The higher the impedance, the lower the fault current will be and the longer it will take for the circuit protection to operate.

To make sure the protection operates fast enough, the loop impedance must be low. Every circuit must be tested to make sure that the actual loop impedance does not exceed that specified for the protective device concerned.

Prospective short circuit current (PSC) testing

The prospective short circuit or fault current at any point in an electrical installation is the current that would flow in the circuit if no circuit protection operated and a complete (very low impedance) short circuit occurred. The value of this fault current is determined by the supply voltage and the impedance of the path taken by the fault current. Measurement of PSC can be used to check that protective devices within the system will operate within safety limits and as per the safe design of the installation. PSC is normally measured between the phase and neutral.

The TNT-EL mains lead supplied with SEW 8025LP

SEW 8025LP Specifications:

Loop Impedance
Range	Measuring range	Nominal test current at 0 Ω external loop	Accuracy
20 Ω	0.00~19.99 Ω	23A / 40ms	(2%rdg + 4dgt)
200 Ω	0.0~199.9 Ω	2.3A / 40ms
2000 Ω	0~1999 Ω	15mA / 400ms
Prospective Short-circuit Current
Range	Measuring range	Nominal test current at 0 Ω external loop	Accuracy
20 KA	0.00~4.00 KA	23A / 40ms	Consider accuracy of loop impedance
2000 A	0~1999 A	23A / 40ms
200 A	0.0~199.9 A	2.3A / 40ms
Voltage Display
Measuring range	Accuracy	Remark
150~260 V	(2%rdg + 4dgt)	at 0 Ω external loop
General
Temperature	0 ~ 40 °C
System voltage	230V	+13%
		-15%
System frequency	50Hz
None Battery system voltage	150V ~ 260V
Over Temperature Protection	When overheating,the ”  ”  symbol will show on the LCD, and the 8025LP stop measuring.
Wiring check	P-E	LEDs illuminate when the wiring polarity of circuit under test is correct
	P-N
	N-E	LED is light when P and N are reversed or the Earth is not connected.
15mA Loop measurement	Loop impedance 2000Ω range measurement is carried out with low test current (15mA). The current will not cause tripping out for ELCBs.

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● High quality Taut Band Meter movement.
● Three insulation test voltages (DC) : 250V, 500V, 1000V.
● Two ranges for continuity test : 2Ω & 20Ω.
● Compact and lightweight.
● AC voltmeter with linear scale up to 600Vac.
● 200mA continuity short-circuit current.
● 1mA test current on insulation test at nominal voltage.
● Automatic discharge of capacitive and inductive circuit with charge stored in the circuit under test.
● Live warning and display of external voltage presence.
● Fuse, air gap, crowbar and overload protected.
● On line battery monitoring shows if battery is ok.
● Manual zero ohm adjustment.
● Low battery consumption.
● Mirror scale.
● Push and turn locking switch for continuous and hand free testing.

SEW 1131IN Insulation-Continuity Tester Specifications:

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The SEW PD-28 high voltage probe is designed to extend the voltage measuring capability of an AC/DC voltmeters to 40,000 volts peak AC or DC Overvoltage Category I. This means the probe can only be used to make measurements on energy limited circuits within equipment. Examples include high voltage within televisions or photo copy machines. DO NOT use this probe to measure high voltages on power distribution systems. The probe stated accuracy is when used with a voltmeter having 10 Megohm input impedance.

The probe is a precision 1000:1 voltage divider that is formed by two matched resistors. The unusually high input impedance offered by these resistors minimizes circuit loading and optimises measurement accuracy. A special plastic body houses the divider and provides the user with isolation and protection from the voltage being measured

• Measures both AC and DC voltages with digital multimeters that have a 10 MΩ input impedance.
• Is typically used to measure high voltages in TV sets, power supplies and instruments in laboratories.
• Intended for low energy applications only.
• Lightweight and rugged. 2 available contact tips: round needle tip for normal use and a special flat spring-type for CRT anode.

SEW PD-28 HIGH VOLTAGE PROBE SPECIFICATIONS:

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Standard features of the SEW 7015IN 15kV Digital High Voltage Insulation Tester include an AC/DC voltmeter as well as audible alarm for live circuits, auto ranging on all insulation resistance ranges with auto hold to freeze readings, bar graph display allowing visual observation of charging patterns, overload protection, calendar and auto-power off.

SEW 7015IN Features:

● Test Insulation Resistance up to 2 TΩ (2000GΩ).
● Short-circuit current up to 5mA.
● Microprocessor controlled.
● 30 insulation test voltages :
500V, 1kV, 1.5kV, 2kV, 2.5kV, 3kV,
3.5kV, 4kV, 4.5kV, 5kV, 5.5kV, 6kV,
6.5kV, 7kV, 7.5kV, 8kV, 8.5kV, 9kV,
9.5kV, 10kV, 10.5kV, 11kV, 11.5kV, 12kV,
12.5kV, 13kV, 13.5kV, 14kV, 14.5kV, 15kV
● AC/DC Voltmeter.
● PI (Polarization Index) indication.
● DAR (Dielectric Absorption ratio) indication.
● Auto-ranging on all insulation ranges.
● Backlight function.
● Bargraph indicates test voltage, rise and decay
can be observed.
● Menu driven.
● Visual and audible warning if external voltage is
present. (≥30Vac or ≥30Vdc).
● Auto-hold function to freeze the reading.
● Overload protection.
● Adjustment for testing time (duration) : 1~30 minutes.
● Auto-off.
● Calendar.
● Optical USB to RS-232 data transmission.
● 200 measurement results can be saved in the
memory and recalled on the display.
● Safety standard: EN 61010-1   CAT IV 600V
EN 61010-2-030
EN 61326-1

SEW 7015IN Specifications:

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SEW 8020ER Earth Resistance Tester Specifications:

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This SEW ITC8 Insulation Resistance Tester Check Box with it’s 12 resistance settings ranging from 0.5 Ohms to 10MOhms allows the user to regularly verify that their instrument are accurate (within the tolerance of theSEW ITC8).

The SEW ITC8 Insulation Resistance Tester Check Box is useful not only on the test bench but also in the field.

SEW ITC8 Insulation Resistance Tester Check Box Features:

• A range of user selectable resistances from 500 milliohms to 10 megohms
• Portable and lightweight
• Suitable for use on the bench and in the field
• Gives the user confidence in meter accuracy
• Quick and easy to use
• Input voltage up to 1000VDC

SEW ITC8 Insulation Resistance Tester Check Box Specifications:

• Resistance Settings: 0.5Ω, 1Ω, 2Ω, 20Ω, 200Ω, 1kΩ, 10kΩ, 20kΩ, 100kΩ, 1MΩ, 2MΩ, 10MΩ
• Accuracy: 0.5Ω – 2Ω ± 0.05Ω,
  20Ω – 10Ω ± 2%
• Maximum Voltage Input: 1000V DC
• Case: Impact Resistant ABS

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SEW 5500CB Transmitter Features:
● The SEW 5500CB transmitter is the ideal tool for locating and identifying cables and individual conductors.
● Designed for locating unenergized cables and powered cables.
● Voltage measurement for cables :
ACV 12V~300V
DCV 12V~300V
● Signal Transmission
●Transmission Power Level Selection (includes 1, 2, 3)
● Transmission Signal Code Selection (includes F, E, H, d, L, C, O, A)
● Flashlight & Back Light function.
● The Silent Mode (Disable Button Beep).
● The Level Bar Display on the LCD Screen (the transmission power level indication).
● The Action Wave Display on the LCD Screen (when the signal is transmitted).
● Auto power off function.

SEW 5500CB Receiver Features:
● The SEW 5500CB receiver is designed to identify and trace wires or cables.
● Designed for locating unenergized cables and powered cables.
● Signal Detection (includes Level, Code, Value)
● Automatic Mode
● Manual Mode (There are 9 levels to select).
● UAC Mode (AC Power Line Detection)
● Flashlight & Back Light function.
● The Silent Mode (Disable Button Beep & Frequency Tone)
● The Danger Symbol is to indicate the AC voltage on the Line.
● The Level Bar Display on the LCD Screen for the signal value & the UAC power value.
● Auto power off function.

SEW5500CB SPECIFICATIONS:

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For RCD tester verification, the SEW 6280 TB can simulate a 10mA, 30mA and 150mA RCD with trip times of 150ms or 30ms (in the case of a 150mA simulation). Loop impedance is checked by plugging the meter being tested into the loop tester section of the test box and operating the meter being tested. The bi-directional switch on the SEW 6280TB allows the operator to measure the local supply loop, and then by changing the switch the test box can simulate a loop impedance value (supply loop + 1 Ohm) to verify the accuracy of the loop impedance tester being checked. Finally the SEW 6280TB can check insulation resistance testers, in both insulation resistance mode as well as continuity mode with a number of pre-set values and test voltages.

SEW 6280TB Check Box Features:

• Wide range of operating voltages from AC 210V/50Hz to 250V/50Hz
• Calibration check of: RCD Testers, Loop Testers and Insulation Testers
• Simulate 3 RCD Test currents and Trip times
• Wiring checks: Phase, Neutral, Earth
• Fuse protected
• Supplied with test leads and plugs
• Plugs into main supply outlets for power

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