ISO 6952:1994 PDF

Overview

ISO 6952:1994 specifies characteristics and requirements for a general-purpose two-pin electrical plug connector with earth contact intended for use with a single solenoid in fluid power systems (hydraulic and pneumatic). This second edition (1994) cancels and replaces the 1989 edition and defines electrical performance, mechanical features, sealing, mounting and usage rules to ensure safe, interoperable connectors for control and regulation assemblies.

Key Topics and Requirements

• Electrical characteristics
  • Rated voltage: 250 V
  • Rated current: 10 A
  • Insulation and dielectric strength: in accordance with IEC 309‑1
  • Temperature behaviour: variation of allowable current over temperature is defined in the standard
• Mechanical and dimensional requirements
  • Pin and earth contact dimensions and positions are specified (see connector detail figure references)
  • Earth contact design ensures the earth connection is made before power pins engage
  • Fixing method: socket is fastened to plug using an M3 screw
• Sealing and protection
  • Flat seal provided in the plug/socket assembly to achieve IP65 degree of protection (dust-tight and protected against water jets) per IEC 529
  • Cover plate required to protect the plug when the socket is removed
• Usage and safety
  • Intended for working conditions where the connector is not exposed to damaging external action (e.g., shocks beyond normal use)
  • Not intended to interrupt current; connect/disconnect only with power off
  • Installations where incorrect connections are possible must be permanently identified per actuator identification requirements (ISO 4413 / ISO 4414)
• Identification
  • Standard provides required identification statement for catalogs and test reports when claiming conformity

Applications and Who Uses It

ISO 6952:1994 is aimed at designers, manufacturers, specifiers and maintenance personnel working with:

• Hydraulic and pneumatic control systems
• Solenoid-actuated valves and control units in fluid power transmissions
• OEMs producing actuators, manifolds and control assemblies
• Procurement and compliance teams specifying connector requirements
• Test laboratories and certification bodies verifying connector conformity

Benefits include improved interoperability, safety, and predictable environmental protection (IP65) for two-pin electrical plug connectors with earth contact.

Related Standards

• ISO 4413: Hydraulic fluid power - general rules for application
• ISO 4414: Pneumatic fluid power - recommendations for application
• ISO 5598: Fluid power systems - vocabulary
• IEC 309‑1: Plugs, socket‑outlets and couplers for industrial purposes - general requirements
• IEC 529: Degrees of protection (IP Code)

Keywords: ISO 6952:1994, fluid power systems, two-pin electrical plug connectors, earth contact, connector dimensions, IP65, single solenoid, electrical connector.