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Table of Contents
Related Manuals for ETCR 2800B
Summary of Contents for ETCR 2800B
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Page 3: Table Of Contents
Content Attention Items: ................................3 I. Brief Introduction ..............................3 II. Model Difference ..............................3 III. Technical Specifications ............................4 IV. Detector Structure ..............................5 V. Network Structure ..............................5 VI. The Principle and Application of Detection ......................6 VII. Wiring Instructions ............................. 9 VIII. -
Page 4: Attention Items
Attention Items: Thank you for purchasing ETCR2800 series products Non-Contact Ground Resistance Online Detector of the company In order to make better use of the product please be certain: ——To read this user manual carefully. ——To comply with the operating cautions presented in this manual. Apply to return circuit ground resistance, metallic return connection resistance, grounding conditions on-line monitoring. -
Page 5: Technical Specifications
III. Technical Specifications Return circuit grounding resistance on-line monitoring, metal return Function resistance connection online monitoring, grounding condition monitoring. Power Supply Detector: DC6V～DC9V,50ma Max. Resistance Range 0.01Ω～200Ω Resolution 0.001Ω Indication Range 0.00Ω～500Ω ±2%rdg±3dgt(20 ±5 ℃ ℃, below 70%RH) Accuracy Grounding Wire 60mm×30mm, closed mode (60mm×4mm steel flat or external Perforation Size diameterФ30mm electric cable) -
Page 6: Detector Structure
IV. Detector Structure 1． Grounding wire perforation size: 60mm×30mm. 2． LCD displayer. 3． Up and down cover connecting screws (6 pieces). 4． Install screw holes. 5． Button and the indicator light. 6． Power supply, RS485 communication interface. Power Supply Indicator Light Working indication when power supply switches on. -
Page 7: The Principle And Application Of Detection
VI. The Principle and Application of Detection 1. Testing Principle. Non-Contact Grounding Resistance Online Detector’s fundamental is measuring return circuit resistance. firstly Sensor send out a drive pulse signal to be measured ground return circuit, then measured ground return circuit responses a pulse electromotive force E, under the influence of electromotive force E there will generate current I in the be measured ground return circuit. - Page 8 impossible to reform the whole grounding grid, or the whole grounding grid and surface facilities need to pull down and rebuild, this is impossible. Therefore, for the large-scale grounding grid, we can install Detector on the primary grounding down lead and secondary grounding down lead to monitor connection status between the grounding down lead and the grounding grid, judge the grounding down lead’s grounding conditions by testing metal return circuit connection resistance.
- Page 9 (3). Generator Room and Launch Tower Grounding Connection. Generator Room and Launch Tower is independent outdoors generally, connect both together to form second return circuit, then install detector, as the picture below. (4). Construction Grounding Connection. ～R …R If R is a independent grounding body under the ground, don’t connect together, are multipoint ～R …R...
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Page 10: Wiring Instructions
VII. Wiring Instructions Wire Color Introductions Red/Brown Power Supply Anode Black Power Supply Cathode（GND） Blue RS485 Signal Positive Electrode Grey RS485 Signal Negative Electrode White Signal grounding electrode can short connect GND. When organize a network, it needs connecting Detector in accordance with wire color. VIII. - Page 12 Manufactured by ETCR Electronic Technology Company Address: F-3F, No.4 Pengshang Zhifu Road, Jiahe, Baiyun District, Guangzhou, Guangdong, China Post Code: 510440 Tel: (86-20)62199556 62199554 Fax: (86-20)62199550 E-mail: info@etcr.cc Website: www.etcr.cc...
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