T-710 Intelligent Cable Identifier

For finding permanent and intermittent faults on live cables

In the power industry, cable identification has to be made using very strict criteria

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

Specifications

Transmitter

Direct or clamp connection
Clamp internal diameter 120mm
Output frequency: 640Hz or 1280Hz
Output power: max 10W in 10 steps
Output voltage: max.150Vpp
Maximum current output 0.8A
Overload/short circuit protection
HMI: 320 x 240 pixels LCD
Internal battery: 4 nos.18650-, 7.4V, 6.8 Ah (operating time 7h on full charge)
Dimensions 280 x 220 x 90mm
Weight 2.3Kg

Receiver

Input mode: Flexible clamp internal diameter 200mm
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 6.8A (operating time 7h on full charge)
Dimensions: 220 x 125 x 55mm
Weight 0.9kg

Operating Environment

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.