Auxiliary Relays Block PN8CH2J (86)

Type : PN8n

Features :

1. High degree of reliability, even when it has been idle for a long time
2. 7 contacts with double interruption
3. Contact configuration can be changed with ease
4. Three mounting variants
5. Wide range of voltage & contact configurations                                                                                                                                                                                                                                                                                    Application : The auxiliary relays type P8n…. are used for all kinds of control and protection circuits in power
   stations and industrial installations, where a high degree of reliability and a high contact rating                           are stipulated, with minimal internal consumption. Acting as instantaneous switching element,                            it provides galvanic separation and contact multiplication in tripping and signalling circuits                                  of protective relays.                                                                                                                               This Auxiliary Relays Block is easily insert in your schematic diagram and connect as you like way.                                                                                                                                                                                                             The magnet system comprises a fixed core and a moving, plunger-type armature, which actuates the
   contact bar directly. When the coil in de-energized , the armature of the magnet and the contact bar are
   forced back into their initial position by spring action. The contacts are arranged symmetrically in two rows, on either side of the magnet, clearly visible and readily accessible. They are designed for a maximum rated voltage of 250V d.c. or a.c. The material used for the contact tips is hard silver. At the most, 3 normally closed contacts are permissible which should be distributed evenly between two sides. The field weakening resistor is cut in by means of a delayed normally closed contact on a special contact bar in series with the coil. The operation signal pops out and becomes visible when the contact system picks up (type P8nC…, PQ8nC…) or when the contact system drops off (Type PN8nC….). It is reset by pressing the button in. The relay type PN8n… is specially designed for minimum drop-out of approximately 20% of the rated voltage. The relay is available with or without drop-off operation indicator. A transparent protective hood of material that does not burn readily provides good protection against dust. The auxiliary relay mounted in a casing is not provided with a hood. The terminals on the sheet-metal base and 1/2’S’ flush mounting case have an opening of dia 3.8 mm
   for external connections. Those of the plug-in sockets can accommodate two wires with a cross-2 section of 2.5mm . The different methods of mounting are illustrated in Fig 4-6. The auxiliary relays should always be mounted with their contact bar horizontal. A method of mounting that is ideal for installation and servicing is the plug-in mounting. Guide pins prevent the relay from being plugged in the wrong way round. The marking of the terminals on the base agrees with that of the relay contacts.