1MRK000838-HA ABB RXIDK 2H series

Definitions

Our relays are designed, manufactured and tested in compliance with the relevant VDE regulations and EN standards

Standards and Directives (examples)

■ IEC 61810-1: 1998 EN 61810-1, VDE 0435 Part 201 (April 1999), Electromechanical non-specified time all-or-nothing relays Part 1: General requirements 

 ■ IEC 61810-5: 1998 EN 61810-5, VDE 0435 Part 140 (April 1999), Electromechanical non-specified time all-or-nothing relays Part 5: Insulation coordination 

 ■ IEC 60255-23: 1994 EN 60255-23, VDE 0435 Part 120 (March 1997), Electrical relays – Part 23: Contact performance 

 ■ EN 116000-3: 1996 Electromechanical all-or-nothing relays Part 3: Test and measurement procedures

 ■ IEC 60721-3-3: 1994 and /A2: 1996 EN 60721-3-3 (September 1995) and /A2 (July 1997) Classification of environmental conditions Part 3: Stationary use at weatherprotected locations

 ■ IEC 60529: 1989 (2nd edition) VDE 0470 Part 1, (November 1992); EN 60529: 1991 Degrees of protection provided by enclosures (IP code)

 ■ 73/23/EEC – Low-voltage directive

Important

Covers for the purpose of shock protection must be applied by the user unless already in place. Where stranded con ductors are used for threaded terminals, wire end ferrules must be employed.

Operating range of the energizing quantity

The products in this Catalog are rated class 1. In addition to the rated values, we state the possible operating range (Vmin...Vmax). All rated values are possible that fall (with their range of 0.8 ×...1.1 ×) into the possible operating range.

Caution: The maximum permissible voltage as determined by the coordination of insulation must be taken into account!

The relays must operate from the lowest value onwards but may operate earlier. The release must take place at the latest when the value falls to 5 % (for DC current/voltage) or 15 % (for AC current/ voltage) of the rated value.

Relevant for this are the specified operate value ΘOP of the system and the specified release value ΘRL of the system. These values limit the operating range. A further limit is given by the maximum permissible heating. The coil resistance is stated as nominal value at 20 °C (with the permissible tolerance). If heating to above 20 °C, the coil resistance is increased by 0.38 %/K; if cooling to below 20 °C, the coil resistance is increased by 0.38 %/K.

For an energizing quantity 'current' this means: The permissible operating range is constant for the entire temperature range.

For an energizing quantity 'voltage' this means: For higher coil temperatures, a higher voltage is needed to reach or exceed the operate sensitivity. For lower coil temperatures, a lower voltage is needed to reach or fall below the release value.

Compared with the preferential temperature range of -5...40 °C the following holds for temperatures outside this range: If extending from, for example, -5 °C...-25 °C, the maximum permissible voltage decreases since at lower temperatures the voltage only reaches or falls below the release value at lower voltages.

If extending from, for example, 40 °C...70 °C, the minimum permis sible voltage increases since at higher temperatures the voltage only reaches or exceeds the operate value at higher voltages. At the same time, the maximum permissible voltage decreases since at higher temperatures the maximum permissible power loss (and thus the maximum permissible voltage) are lower.

Mechanical service life and switching capacity of the contacts

The mechanical service life is the number of the switching operations that will be safely reached for non-energized contacts. The mechanical service life of the contacts under load depends considerably on the electrical stress and is stated for the number of switching operations possible without detrimental wear under permissible stress. By connecting 2 contacts in series, the break ing capacity is increased by a factor 2.5 applied to the stated value.

Contact materials

Silver is the standard material for relay contacts due to its high electrical conductivity. It is less suitable for sulphurous atmos pheres. (Our devices are gold-bloomed for storage stability.) Recommended application range:for current > 50 mA, for voltage > 1 V, for power > 1 W.

Silver-palladium is less sensitive to sulphurous atmospheres than silver. It has better erosion resistance than silver but a higher contact resistance. (Our devices are gold-bloomed for storage stability.) Recommended application range:for current > 50 mA, for voltage > 1 V, for power > 0.5 W.

Silver-cadmium oxide is distinguished by a high erosion resistance and low welding tendency. It is therefore particularly suitable for high making currents and peak currents. (Our devices are passivated.) Recommended application range:for current > 500 mA, for voltage > 12 V, for power > 10 W.

Gold is used for switching low currents and low voltages at low loads. Recommended application range:for current > 1 mA < 0,2 A, for voltage > 1 mV < 24 V, for power < 5 W.