ETCR9400 Live Zinc Oxide Arrester Clamp Tester

Overview

ETCR9400 LiveZinc Oxide Arrester Clamp Tester is used to test the full current of the zinc oxide arrester of the ciruit lines below 35KV to diagnose whether the performance of the arrester is degraded. There is no need to power off and disassemble the arrester during the testing, the operation is safe and fast.According to Article 9.1 of the electric power industry standard "DL/474.5-2018 Site Insulation Test Implementation Guidelines-Lightning Arrester Test", in order to detect whether the arrester inside is damp and the metal oxide resistor is deterioration during working, can be used the method which regularly testing the continuous current of the power frequency during running.Under normal situation, the continuous current through the arrester is very small. Once the arrestor interior is damp, the current can increase up to several milliamperes or even tens of milliamperes. Because the operating voltage often fluctuates, it is not easy to determine an absolute standard to judge whether it is severely damp, but compare with the previous records and the three-phase. If there is a significant difference in the leakage current, then it must be dealt with.The operation worker can decide whether to maintain the arrester according to the leakage situation tested by this thester, avoiding blind disassembly and inspection.

ETCR9400 Live Zinc Oxide Arrester Clamp Tester is composed of host, detector, and an insulating rod. The host and the detector use wireless communication, the communication distance is 30 meters, the host can remotely open and close the clamp head of the detector to complete the testing, and the host can display the current test value and the status of the clamp head in real time. The detector uses a micro motor to drive the opening and closing of the clamp head. The clamp head is made of high-performance permalloy, which has super anti-interference ability and is hardly affected by external magnetic fields. The resolution is up to 1uA. The detector can be connected to an insulating rod for testing of zinc oxide surge arresters on high-voltage circuit lines. The tester can also be used as an ultra-high-precision clamp-on leakage current meter.

ETCR9400 Accessories

• Master (1 PCS)
• Detector (1PCS)
• Telescopic insulation rod (1PCS)
• Emergency pull ring (1PCS)
• Charger (2 PCS)
• USB communication cable (1 PCS)
• Aluminum case (1 PCS)
• Warranty card / Qualiication card / Manual (1 Set)

Specification

Range & Accuracy

Technicial Specification

Application

Host Receiver & Detector Instruction

Field Application & Operation

Step 1: 

Check if the detector clamp jaw contact face are clean
The cleanliness of the detector clamp jaw surface is very important to the test accuracy. Before the test, pull out the detector clamp jaw by hand to check whether the  contact surface of the clamp jaw is clean or not. If there is foreign matter contamination, please use soft cloth or WD40 and other rust inhibitor to clean up. It is strictly forbidden to use alcohol to clean the clamp jaw surface.

Step 2: 

2.1. Turn on the detector and the receiver to checking

Press the POWER button to turn on the detector and receiver. The detector adopt the self-locking button, press the POWER button to start the detector, and the indicator light will be on.
When the detector prompts low power, the closing operation can no longer be performed; only the opening operation can be performed; at this time, the test can only be continued after charging.

Please confirm whether the battery capacity is enough before testing. In order to avoid the detector hanging on the overhead high-voltage line and cannot be turned on and removed.

2.2. View communication state
1. When the host does not receive the detector signal, as shown in Figure A.
2. When the host receives the signal from the detector and the detector clamp jaw are closed (the detector clamp jaw is closed by default when power on, if the actual state of the detector is not closed, please open or close the clamp jaw to synchronization state), as shown in Figure B, only when the detector is detected. The host will display the test current value only when detector clamp jaw is closed.
3. When the state of the detector is closed, open, open, stopped, etc., as shown in Figure C. When the clamp jaw state is closed, the closing operation can no longer be performed; when the clamp jaw state is open, the opening operation can no longer be performed.

Step 3: 

Connect the detector on insulation rod
Connect the detector to the aluminum alloy joint of the insulation rod, tighten the screws, and press the OPEN button of the receiver to open the jaws. and the detector clamp jaw will automatically open to the limit and stop after maximum opening.