- #What is the purpos loopback cable or plug how to#
- #What is the purpos loopback cable or plug install#
- #What is the purpos loopback cable or plug series#
Mainly two types of terminals are used in junction boxes. Normally in all industries, they usually prefer junction boxes with a minimum IP65. Whereas, for outdoor areas, a minimum IP56 is required to withstand severe conditions. For indoor areas, usually, IP21 & IP 44 are used because of their low-security level.
#What is the purpos loopback cable or plug install#
We have to choose the IP rating of equipment by studying the location where we have to install that. Ingress Protection is detailed in international standard IEC-60529. Ingress Protection (IP) Rating provides protection of equipment against certain external influences such as dust, water, accidental contact, intrusions, and protection against direct contact. CRCA steel is also used as a material for manufacturing junction boxes for non-hazardous small scale industries Ingress Protection Rating (IEC-60529) SS316L & GFRP are widely used materials for both indoor & outdoor instrument junction boxes. Glass Fiber Reinforced Polymer (GFRP) is the widely used material for outdoor areas due to its high resistance to contamination from oils & its excellent mechanical properties & life expectancy. Materials with good corrosion resistance, high yield, high creep strength and tolerance to high ambient temperature is used for manufacturing junction boxes for outdoor areas that are exposed to changing environmental conditions. The most commonly used junction boxes in the offshore platforms are Ex e “increased safety” & Ex d “flameproof”.
#What is the purpos loopback cable or plug series#
IECEx Certification is based on International Standard IEC-60079 Series & ATEX Directive is based on European Union (EU) Standard. Type SS316L is usually preferred because Type 303 & 304 are more subjected to pitting – type corrosion (API RP 14F & API RP 14FZ).Īs per API 14FZ, SS316L is capable of achieving ingress protection enabling those instrument junction boxes to be reasonable for use in hazardous areas and can be certified under ATEX Directive & IECEx Certification scheme. In offshore structures, the majority of instrument junction boxes are manufactured using stainless steel. IEC-61892 (Mobile & Fixed Offshore Units, Electrical Installations).IEC-60423 & IEC-62444 (Design, Construction & Selection of Gland plates & Cable Glands).IEC-60079-14 (Electrical Installations design, selection & erection).IEC-60079-7 (Equipment Protection by Increased Safety ‘e’.IEC-60079-10.1.:2009 (Explosive Atmosphere – Classification of areas explosive, gas atmosphere).IEC-60079 (Equipment – general requirements).API RP 14F & API RP 14FZ (Design, Installation & Maintenance for Fixed & Floating Offshore petroleum facilities for Unclassified & class1, zone0, zone1 & zone2 locations.).The following codes and standards are applicable while selecting a junction box. Junction Box Selection Factorsįactors that have to be considered for selecting Junction Box are as follows. In this part, we will introduce two types of tests to troubleshoot transceiver and switch port: single-port test and dual-port test.The selection of instrument junction boxes shall be governed by the specific electrical application and by the areas in which the junction boxes are installed.Ī junction box should have certification to exhibit proper hazardous area protection & ingress protection IP.
#What is the purpos loopback cable or plug how to#
In the next part, we will deliver how to do the fiber loopback test on the transceiver. For its unique working mode, the test is a convenient way to maintain transceivers. Conventionally, a transceiver has a transmitting port and a receiving port, in that way, the loopback test can be applied to test the ports to diagnose whether the transceiver is working well and the configuration of the switch is right. As you know, the transceiver is the basic component of fiber optic communication network equipment. To conduct a fiber loopback test, the communication devices will be involved, like the transceivers and the switch. But what a loopback test means for fiber optic network and how to make use of it will be the issues that we will explore in this post. Therefore, by comparing transmitting signals with the receiving signals, the loopback test is used to debug physical connection problems. It refers to the process of transmitting electronic signals or digital data streams and returning to their sending point without any intentional processing or modification. Loopback is a commonly used term in telecommunications.
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