Obsolete

YD/T 638.3-1993The naming rule of types of telecommunication power supply (English PDF)

通信电源设备型号命名方法

YD/T 638.3 | Evolution and historical versions

Std ID	Title	Status
YD/T 638.3-1998	The naming rule of types of telecommunication power supply	Obsolete
YD/T 638.3-1993	The naming rule of types of telecommunication power supply	Obsolete

YD/T 638.3-1993 is obsolete. It has been replaced by YD/T 638.3-1998. This page sells the obsolete edition, for projects and contracts that still cite it.

This is a limited preview

Buy now to download the full PDF

Need quotation for your management?

Get a formal quotation for YD/T 638.3-1993 in 30 minutes.

Issued by

Ministry of Posts and Telecommunications

Level / Type

National · Recommended

Issue date

February 1, 1994

Implementation date

March 31, 1994

Scope

YD/T 638.3-1993 is the English-translated version of 通信电源设备型号命名方法.

YD/T 638.3-1993 is the Chinese industry standard "The naming rule of types of telecommunication power supply". It was issued on February 1, 1994 by the Ministry of Posts and Telecommunications, and took effect on March 31, 1994. It is obsolete: it has been replaced by YD/T 638.3-1998.

Found what you need?

Document preview — YD/T 638.3-1993

National Standard of the People's Republic of China

Issued by: Ministry of Posts and Telecommunications

Document data

1 Document data

Sector: Telecom (industry standard).

Issuing body: Ministry of Posts and Telecommunications.

Date of issue: 1994-02-01.

Date of implementation: 1994-03-31.

Status: obsolete, replaced by YD/T 638.3-1998.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

How to Download YD/T 638.3-1993

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.