Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
BS PD CLC/TS 61643-22-TC:2020
Năm ban hành 2020
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Tracked Changes (Redline) - Low-voltage surge protective devices Part 22: Surge protective devices connected to telecommunications and signalling networks — Selection and application principles
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Chỉ số phân loại Quốc tế (ICS)
By field |
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Số trang
Page 162
Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard This part of IEC 61643 describes the principles for the selection, operation, location and coordination of SPDs connected to telecommunication and signalling networks with nominal system voltages up to 1 000 V r.m.s. a.c. and 1 500 V d.c. This standard also addresses SPDs that incorporate protection for signalling lines and power lines in the same enclosure (so called multiservice SPDs). |