BS EN 61347-2-10:2001+A1:2009, IEC 61347-2-10:2000 Lamp controlgear. Particular requirements for electronic invertors and convertors for high-frequency operation of cold tubular discharge lamps (neon tubes)
BS EN 61347-2-10 specifies requirements for electronic invertors and convertors for high-frequency operation of tubular cold-cathode discharge lamps used in signs and luminous discharge tube installations.
It applies to this type of installation operating with an output voltage exceeding 1 000 V but not exceeding 10 000 V for direct connection to supply voltages not exceeding 1 000 V at 50 Hz or 60 Hz or 1 000 V d.c. In Japan, the output voltage of 15 000 V is acceptable.
The requirements for two types of invertors and convertors, types A and B, are specified.
– Type A unit: an invertor or convertor operating within the frequency range 20 kHz to
50 kHz, and having an output voltage (between terminals) not exceeding 5 000 V peak, a maximum output current limited to 35 mA (r.m.s.) and 50 mA (peak value). The supply voltage does not exceed 250 V at 50 Hz or 60 Hz or 250 V d.c.
– Type B unit: an invertor or convertor having a no-load output voltage not exceeding
5 000 V to earth or 10 000 V between terminals, operating within the frequency range
10 kHz to 100 kHz with a maximum output current limited to 200 mA (r.m.s.) and 400 mA (peak value).
In order to check the safety of invertors or convertors, it is necessary to check their performance. However, since no standardization of the characteristics of neon tubes exists, reference loads are specified in this standard to ensure reproducible test results.
The rated maximum operating temperature of the winding, tw, is not applicable to this standard.
Contents of BS EN 61347-2-10:
Introduction
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 General notes on tests
6 Classification
7 Marking
7.1 Item to be marked
7.2 Durability and legibility of marking
8 Terminals
9 Provisions for earthing
10 Protection against accidental contact with live parts
11 Moisture resistance and insulation
12 Electric strength
13 Thermal endurance test for windings
14 Normal conditions
15 Abnormal conditions
16 Fault conditions
17 Construction
18 Creepage distances and clearances
19 Protective circuits
20 Screws, current-carrying parts and connections
21 Resistance to heat, fire and tracking
22 Resistance to corrosion
23 No-load rated output voltage and rated output current
23.1 No-load rated output voltage
23.2 Rated output current
23.3 Compliance