Standards

This part of IEC 61850 specifies the specific communication service mappings for the communication between bay and process level and if specifies a mapping on a serial unidirectional multidrop point point to point link in accordance with IEC 60044-8. This part of IEC 61850 specifies a mapping of the abstract service for the transmission of sampled values ( as defined in IEC 61850-7-2 ) on a serial unidirectional multidrop point link in accordance with IEC 60044-8. It applies to the communication between merging units of electronic current (ECT) or voltage-transformers (EVT) and bay devices such as protection relays. If higher requirements on sampling rate. further sampling measured value data sets in addition to the universal data set. inter-bay communication and synchronization apply, these will be covered by IEC 61850-9-2 Figure 1 show the schematics of this interface.

This part of IEC defines the specific communication services mapping (SCSM) for the transmission of sampled values according to the abstract specification in IEC 61850-7-2. The mapping is that of the abstract model on a mixed stack using access to an ISO/IEC 8802-3 link for the transmission of the samples in combination with IEC 61850-8-1.

This part of the ISO/IEC 9314 specifies the Media access control (MAC) the middle sublayer of the data link layer (DLL) for fiber distributed data interface (FDD). FDDI (ISO/IEC 9314) provides a high- bandwidth (100 Mbits) general - purpose interconnection among information processing systems, subsystems and peripheral equipment, using fiber optics or other transmission media. (FDDI can be configured to support a sustained data transfer rate of at least 80 Mbits/s (10 Mbyte/s). FDDI provides connectively for many nodes distributed over distances of many kilometers in extent. Certain default parameter values for FDDI (eg. timer settings) are calculated on the basis of up to 1000 transmission links or up to 200 km total fiber path length (typically corresponding to 500 nodes and 100 km of dual fiber cable, respectively) however, the FDDI protocols can support much larger networks by increasing these parameter values.

This International standard defines an input/output bus for interconnecting computers and peripheral devices. It defines extensions to the small computer system interface (ISO 9316:1989), referred to herein to herein as SCSI-1. Its also provides more complete standardization of the previously characteristics of the interface to allow inter-operability of conforming devices. This International standards is referred to herein as SCS1-2. The term SCS1 is used wherever it is not necessary between the two version

The purpose of this Standard is to provide criteria for the safe erection, use, and inspection of access scaffold (as covered in CSA S269.2 and engineered systems) and for the training of erectors and users of such equipment.

1.2 Subjects addressed

This Standard applies to the erection, use, and inspection of access scaffold that is

a) supported on a surface;

b) hung from multiple points, but is not capable of moving vertically or horizontally; or

c) mounted on wheels.

This Standard addresses key hazards, including fall hazards, structural instability, platform failures, and material handling problems.

Note: In this Standard, the term erection refers to the assembling, altering, or dismantling of a scaffold.

While this Standard applies to scaffold as defined in Clause 3, this Standard is not limited to scaffold used solely for the purpose of construction, maintenance, or repair operations.

1.3 Equipment not covered

This Standard does not apply to the following:

a) falsework and formwork for construction purposes, as covered in CSA S269.1;

b) suspended access equipment, as covered in CSA Z91 and CAN/CSA-Z271;

c) elevating work platforms, as covered in CAN/CSA-B354.6, CAN/CSA-B354.7, and CAN/CSA-B354.8;

d) manual or powered mast-climbing work platforms, such as a pump jack scaffold or equipment covered in CSA B354.9, CSA B354.10, and CSA B354.11;

e) centre-pole scaffolds; and

f) appliances or accessories attached to scaffold.

1.4 Terminology

In this Standard, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; may is used to express an option or that which is permissible within the limits of the standard; and can is used to express possibility or capability.

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.

Notes to tables and figures are considered part of the table or figure and may be written as requirements.

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.

1.5 Measurement

The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.

This standard can be purchased via the Canadian Standards Association website https://www.csagroup.org/store/product/Z797-18/ 

This International standard defines the common access method (CAM) for the small computer systems interface (SCSI). The purpose of this International standard is to define a method whereby multiple environments may adopt a common procedure for the support of SCSI devices. The CAM provides a structural method for supporting peripherals with the software (e.g. device driver) and hardware (e.g. host bus adapter) associated with any computer.