Cable Identifier

In the power industry, cable identification has to be made using very strict criteria, because it is related to personal safety and mistakes may result in damage to plant. The T-710 is a high-performance cable identification instrument, consisting of a signal transmitter and a receiver. It is used to accurately identify a specific cable among a bundle of cables. The system is suitable for on-line use (3-core armoured cable only) or for off-line cables.

Features

Flexible clamp for receiving signals

Load current measurement for 50Hz/60Hz cable

Direct output or clamp coupling

Adjustable, high output power

Automatic impedance matching

Clear identification of cable

High-capacity lithium-ion battery

Lightweight, sturdy housing

High-accuracy digital sampling and processing with extremely narrow passband reception

Immunity from interference

Suppression of power frequency and harmonic interference from adjacent cables and pipelines.

Specifications

Transmitter

Output frequency: 640Hz or 1280Hz

Output power: max 10W in 10 steps

Output voltage: max.150Vpp

Overload/short circuit protection

HMI: 320 x 240 pixels LCD

Internal battery: 4 nos.18650-, 7.4V, 6.8 Ah

Dimensions 280 x 220 x 90mm

Weight 2.3Kg

Receiver

Input mode: Flexible clamp

Active detection frequency 640Hz, 1280Hz

Passive detection system frequency 50/60Hz

Current measurement: 1 – 1000A±3% AC

HMI: 800 x 480 pixels LCD

Battery: 2 nos. 18650 battery, 3.7V 6.8Ah

Dimensions: 220 x 125 x 55mm

Weight 0.9kg

Operating Environment

Temperature: -10oC to +50oC

Relative Humidity: 5 – 90%

Ingress protection IP54

Application

Smart Clamp Method

Smart clamp identification using signal transmission is the clearest and most powerful method for cable identification. The frequency of the receiver is set at 1280 Hz or 640Hz, depending on the cable length.

For a dead cable, direct connection is used, with the best connection being core-earth. If this is not convenient a phase to sheath connection may be used, but the sheath should not be connected to earth. For live cables, the clamp coupling method is preferred.

On the target cable, the receiver will identify the frequency and other confirmatory parameters and indicate to show it is correct. A negative indication shows that an adjacent cable has been measured.

Set Reference Method

The user will set a reference for a particular cable which will identify the phase angle and magnitude of the current in the cable. If the detector is moved to another point of the cable it will compare the new parameters to the set reference. If they match the system will indicate and the cable is identified. Alternatively, indicates the cable has failed to meet the reference criteria and it is concluded that it is not the target cable.