in the EP4280D ?

General Information:

Live cable identifier, also known as cable identifier,multi-function cable identifier, and intelligent cable identifier, is designedfor power cable engineers and cable technicians to solve the technical problemsof cable identification. The user can accurately identify one of the targetcables from the multiple cables through the instrument to avoid serious accidents caused by accidentally sawing the live cable. The cable identification starts from the operation of the two ends of the cable. It must be ensured that the double numbering at both ends of the cable is accurate. Itconsists of a receiver and a receiving flexible current clamp. When a livecable is identified, 10 cables can be pre-calibrated at the transmitting endand then received at the remote end, which greatly saves the operation time of engineering personnel and improves work efficiency.

Transmitter: Recognize live cable,transmit signal to target cable during power cable identification, built-inhigh-function rechargeable lithium battery, automatic impedance matching, fully automatic protection. The transmitter adopts an integrated special toolbox design, using polypropylene plastic as a raw material, and adding a new type of composite filler for one-time injection molding, which has low density, strength, rigidity, hardness, wear resistance, heat resistance, and insulation performance. The cabinet can withstand a pressure of about 200kg. The large LCD of the host displays the remaining battery power in real time, with white backlight and dynamic indication of the transmitted signal.

Transmitting clamp: When the live cable is identified, the transmitting clamp couples the signal sent by the transmitter to the target cable, the clamp size is Φ125mm, the transmitting clamp has directionality, and the transmitting signal flows from the arrow icon on the transmitting clamp.

Energized identification: use caliper coupling to output pulse current, transmit four frequencies: 625Hz,1562Hz, 2500Hz, 10kHz, couple to the target cable through the launch clamp (thetarget cable is a three-core armored cable), inject composite pulses into the cable core Current signal. This pulse current generates an electromagnetic field around the target cablefor detection and identification by the receiver and the flexible currentclamp. Because the pulse current has directionality, the detection also has directionality.

De-energized identification: Directly output pulse current is used to inject a pulse-coded current signal into thecable core. This current generates an electromagnetic field around the target cable for the receiver, flexible current clamp to detect, decode, and identify, Because the current hasdirectivity , the detection also has directivity

Receiver: Handheld device, 3.5-inchcolor LCD screen, built-in high-speed microprocessor, combined with precisealgorithm, to identify and decode the pulse-coded current signal of thetransmitter The cable shows the signal strength and the detection result, whichis exquisite and intuitive; the color scale bar is dynamically displayed, at aglance, the cable identification is successfully marked ,and the non-target cable is marked with x, which can quickly and automatically identify the target cable. At the same time, the test voltage range is AC 0.00V600V (50Hz / 60Hz), the AC current range is AC0.00A ~ 5000A (50Hz / 60Hz), andthe current frequency can be measured from 45Hz to 70Hz.

Flexible current clamp: Rockwell coil, with excellent transient tracking ability, can quickly identify the pulse code current generated by the transmitter, suitable for thick cablesor irregular shaped conductors. The inner diameter of the clamps is about 200mm,which can clamp cables under Φ200mm, without disconnecting the measured line,non-contact measurement, safe and fast.

Technical Specifications:

1. Baseline conditions and working conditions


Baseline conditions

Working conditions


Environmental Temperature




Environmental Humidity




Measured voltage and current frequency



When testing voltage and current

Receiver operating voltage




Transmitter working voltage




External electric field, magnetic field

Should be avoided

Tested cable location

The cable under test is at the approximate geometric center of the flexible current clamp

2. Transmitter specifications


Transmits a composite pulse frequency current signal, displays the remaining battery voltage, and dynamically indicates the launch status


11.1V large-capacity rechargeable lithium battery, continuous working for about 8 hours when fully charged


Caliper coupling during live identification. Direct output during power outage identification

Transmit frequency

625Hz, 1562Hz, 2500Hz, 10KHz (when charged identification), press the up and down arrow keys to adjust the transmission frequency

Pulse voltage

500V (de-energized)

Pulse current

Maximum 5A (depending on the size of the loop resistance)

Pulse frequency

1 time / second

Pulse width


Test lead length

3 meters, with crocodile clamps, 1 red and black

Transmitter clamp size

LWH 320mm×180mm×35mm

Transmitter clamp inner diameter


Transmitter clamp lead length


Ground pin size

LWH 225mm×100mm×10mm

Transmitter size


Display mode

Large LCD displays real-time remaining battery voltage, with backlight

LCD size

Length width 128mm × 75mm, display area 124mm × 67mm

Package size

LWH 400mm×245mm×335mm

Working temperature


Storage conditions

-20~50℃,≤95RH, No condensation

Backlight control

Yes, white backlight


Transmitter 2.5kg, transmit clamp 1.12kg, total mass 4.44kg (including receiver)

Battery power

When the battery voltage is lower than 9.65V, a low battery voltage icon is displayed to remind the battery to charge. When it is lower than 9.5V, the device will automatically shut down


12.6V DC charger


The transmitter adopts an integrated special toolbox design, and the box can withstand a pressure of about 200kg

Withstand voltage

AC 3700V/rms (Before the top and bottom of the instrument case)

Electromagnetic characteristics


Suitable for safety regulations

IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2)

Please contact EP Hipot Electric for more details on Cable Identifier EP4280D.