- 品牌/商标:BUSCHJOST
- 企业类型:贸易商
- 原产地:德国
Spark quenching with DC voltage (proposal)
1. Diode D in parallel to inductive load.
Observance of correct polarity (positive pole to cathode).
Dimensioning specifications for quenching diode:
Rated voltage at diode: UD ≥ 1.4 x UV
Selection of a quick switching diode (recovery time trr < [200] ms).
Rated current at diode: IR ≥ ILoad
2. RC link in parallel to load in parallel to switching contact.
Reference number of switchings: 30/min. Reference temperature: +30°C
Spark quenching with diode with DC and inductive load:
Imax = 1.5 x Imax of table
Creepage and air paths correspond to insulation group B according to
VDE Reg. 0110 (except contact clearance of microswitch).
* Gold-plating not required as it would decay. Max. perm. in-rush
current (appr. 30 ms) ACmake = max. 1.
** Gold-plating required (will not decay).
? Lower value of critical voltage guarantees sufficient contact safety.
Lower voltages permissible under favourable conditions.
Before using these products with fluids other than those specified, for
non-industrial applications, life-support systems, or other applications
not within published specifications, consult Norgren.
Through misuse, age, or malfunction, components used in fluid power
systems can fail in various modes. The system designer is warned to
consider the failure modes of all component parts used in
fluid power systems and to provide adequate safeguards to prevent
personal injury or damage to equipment in the event of such a failure.
System designers must provide a warning to end users in the
system instruction manual if protection against a failure mode
cannot be adequately provided.
System designers and end users are cautioned to review specific
warnings found in instruction sheets packed and shipped with these
products where applicable.