Cable Identifier Live De-energized Dual Mode 800Hz Pulse Tester for Cable Fault Repair | XHSB505B

Product Overview

The XHSB505B is a dual-mode cable identifier designed for power cable engineers and electric power industry workers. Its transmitter outputs a regular 800Hz pulse signal onto the target cable, generating an induced signal along the cable. The receiving clamp and receiver convert, detect and identify the signal: by comparing the amplitude, pulse number and polarity shown on the 3.2-inch LCD, operators can positively identify the target cable among many identical cables in one trench. The instrument supports both live (energized) and de-energized cable identification, and consists of a transmitter, a transmitter clamp, a receiver and a flexible receiver clamp.

Key Features

• Dual-mode identification: live (energized) and de-energized cable identification in one instrument
• 800Hz pulse signal, 2.75s per pulse group, with selectable level I (145V) and level II (240V) output
• 0–10A output current with ammeter needle swing and power lamp flashing as live output indication
• Clear result display: amplitude, pulse count and polarity in real time with “√” / “×” and “Target Cable” / “Non-target Cable” status
• One-key signal calibration with 1–8 level gain adjustment for reliable identification in dense trenches
• Short-circuit protection and overheat protection with automatic fan cooling
• Portable ABS housing with 12.6V 5200mAh transmitter battery (4+ hours) and 7.4V 2200mAh receiver battery (about 5 hours)
• Complete kit in a shock-proof foam-lined wooden case, ready for immediate field deployment

Two Identification Modes

De-energized identification — direct connection

The transmitter applies its regular pulse signal directly to one core of the de-energized cable. The far end of that core is grounded so the current returns through the earth loop. The flexible receiver clamp is placed around each cable at the working end: the target cable carries the strongest signal in the same direction as the injected current, while other cables show weaker or opposite signals. Other unused cores and the armor should not be grounded during this test, so that return current cannot cancel the injected signal.

Live identification — clamp coupling

Without any operation on the cable itself, the transmitter clamp couples the pulse signal onto the armor/sheath layer of the three-core armored target cable, which must be reliably grounded at both ends. Because the coupled current is much smaller than direct injection, raise the receiver gain when working in live mode. The arrows on the transmitter clamp and the receiver clamp must both point toward the cable far end. The coupling method is not suitable for live single-core high-voltage cables.

Quick Operation Steps

1. Recommended self-test: short the red and black output leads, clamp the flexible receiver clamp on the red lead with its arrow pointing in the current-flow direction, and confirm the receiver shows a stable signal with “√” marks.
2. Connect the transmitter leads according to the selected mode (direct connection for de-energized cables, coupling clamp for live cables).
3. Switch on the transmitter and select output level I or II; the power lamp flashes and the ammeter needle swings in step with each pulse group.
4. Switch on the receiver and long-press to select the matching mode (direct or coupling); the mode is confirmed after 3 seconds.
5. Adjust the gain (1–8 levels) until the status bar prompts that calibration is available.
6. Calibrate on a known position of the target cable (receiver clamp at least 2m from the transmitter clamp); a beep confirms successful calibration. Do not change the gain afterwards.
7. Test each cable in the trench and read the result: three “√” marks with “Target Cable” = target; “×” marks = non-target.
8. When switching to another cable to identify, cancel the calibration and repeat steps 5–6.

Technical Specifications

Transmitter & Transmitter Clamp

Receiver & Flexible Receiver Clamp

General

Standard Delivery

FAQ

Q1. Can the XHSB505B identify a cable without switching off the circuit?

A: Yes. In live identification mode the transmitter clamp couples the pulse signal onto the armor/sheath of the target cable without stripping or disconnecting it, so identification can be performed while the circuit stays in service. The target cable must be a three-core armored cable with both ends of its sheath reliably grounded. Direct connection mode must never be used on energized cables.

Q2. Which wiring method should I use for de-energized identification?

A: The manual provides two direct connection methods. Method 1 (recommended in complex sites): connect the red lead to one cable core, the black lead to an earth mesh or a ground pin driven deep into moist soil, and ground the far end of that same core; keep other unused cores and the armor ungrounded so return current cannot cancel the signal. Method 2 is simpler (red to core, black to the copper screen or armor) but is more easily disturbed by neighboring cables. Choose Method 1 when the environment is complex and the cable insulation is good.

Q3. The receiver shows a “×” under polarity or “Non-target Cable” on the cable I believe is correct. What should I check?

A: Check in this order: (1) the arrows on the transmitter clamp and the flexible receiver clamp must point to the cable far end and stay consistent with the signal direction; (2) the red and black leads must be plugged into the correct output ports; (3) the receiver clamp must encircle only the target cable, not neighboring cables; (4) the red lead must be connected to the core or sheath, not to ground; (5) the correct output level and wiring method are selected; (6) the gain is set to a suitable level (1–8); (7) the target cable is not damaged or broken. Re-calibrate after checking, or switch to another identification method.

Q4. How long do the batteries last and how should they be maintained?

A: The transmitter uses a 12.6V 5200mAh lithium battery supporting 4+ hours of continuous work, and the receiver uses a 7.4V 2200mAh battery supporting about 5 hours. Charge the transmitter when the battery indicator drops to one bar (below about 10.5V). The charger LED is red while charging and turns green when full. If the instrument is stored for a long time, recharge it about every 3 months. Never test with the battery cover open.

Q5. Can the coupling (live) mode be used on single-core high-voltage cables?

A: No. The live coupling method is designed for ordinary three-core sheathed cables, whose three-phase currents cancel each other externally. On a live single-core high-voltage cable the strong power-frequency current can saturate the clamp and make correct signal reception impossible. For such cables, carry out identification after de-energizing and use the direct connection method.