![header thumbnail](/images/img-default-logo.png)
EN 60519-21:2009
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
![header thumbnail](/images/img-default-logo.png)
Safety in electroheat installations - Part 21: Particular requirements for resistance heating equipment - Heating and melting glass equipment
01-12-2011
23-01-2009
FOREWORD
1 Scope and object
2 Normative references
3 Terms and definitions
4 Classification of electroheat equipment according to
voltage bands
5 Classification of electroheat equipment according to
frequency bands
6 General requirements
7 Isolation and switching
8 Connection to the supply network and internal connections
9 Protection against electric shock
10 Protection against overcurrent
11 Equipotential bonding
12 Control circuits and control functions
13 Protection against thermal influences
14 Risk of fire and danger of explosion
15 Marking, labelling and technical documentation
16 Information on inspection and commissioning and instructions
for utilization and maintenance of electroheat installations
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.