Siemens Reyrolle 7PG11 Auxiliary and Trip Relays

Siemens Reyrolle 7PG11 Auxiliary and Trip Relays Suppliers,Exporters in India

ARP IMPEX is a supplier and exporter of Siemens Reyrolle 7PG11 Auxiliary and Trip Relays in India. We supply these relays for switchgear panels, utility substations, transformer protection systems, power plants and industrial electrical projects against the required Siemens article number.

Protection and control panels often require more trip, alarm or indication contacts than the main protection relay can provide. Siemens Reyrolle 7PG11 relays are used for contact multiplication, trip command repetition, interlocking, alarm initiation and remote indication in such applications.

The range includes self-reset, hand-reset and electrically reset models. Buyers can also select different combinations of normally open and normally closed contacts, operation flags, coil voltages and case sizes. Heavy-duty contact versions and fixed time-delay arrangements are available for suitable tripping and control duties.

The draw-out construction helps during maintenance and replacement. The relay element can be removed from the case without disturbing the permanent panel wiring. This is particularly useful in older substations and protection panels where the existing wiring and relay case arrangement must be retained.

ARP IMPEX handles new project requirements as well as replacement enquiries for older Reyrolle auxiliary and trip relays. Share the complete part number, coil voltage, contact arrangement and reset method for price and export availability.

Available Siemens Reyrolle 7PG11 Relay Types

Self-Reset Auxiliary Relays

A self-reset relay remains operated while its coil is energised and returns to its normal position when the operating signal is removed.

These models are commonly used for:

• Protection relay contact multiplication
• Trip command repetition
• Alarm and annunciation circuits
• Interlocking between switchgear devices
• Remote equipment status indication
• Repeating signals to an RTU or SCADA system

Hand-Reset Trip Relays

Hand-reset relays remain in the operated position until they are manually reset from the relay front.

They are useful where the trip or alarm condition must remain visible even after the original operating signal has disappeared. This helps an operator or maintenance engineer identify which protection circuit operated before the panel is returned to service.

Electrically Reset Relays

Electrically reset versions remain operational until a separate reset signal is applied. They suit substations and industrial plants where the relay must be reset remotely from a control room, RTU or panel control circuit.

Selected models allow both electrical and manual resetting.

Relays with Operation Flags

Siemens Reyrolle 7PG11 relays can be supplied with different flag arrangements. The flag gives a clear local indication that the relay has operated.

Depending on the selected model, the relay may have:

• No operation flag
• Hand-reset flag
• Self-reset flag
• Reverse-acting flag

A hand-reset flag remains visible until it is manually cleared, even if the relay contacts have already returned to their normal condition.

Technical Specifications

• Brand: Siemens
• Product family: Reyrolle Alpha
• Series: 7PG11
• Product type: Electromechanical auxiliary and trip relay
• Common ranges: 7PG111 and 7PG112
• Main functions: Contact multiplication, trip repetition, alarm indication and interlocking
• Coil supply: AC or DC, depending on the article number
• Contact arrangement: Normally open, normally closed or mixed contacts
• Number of contacts: Up to eight contacts on commonly used configurations
• Relay elements: Single-element and dual-element versions
• Reset methods: Self reset, hand reset, electrical reset or combined reset
• Flag options: Without flag, hand-reset flag, self-reset flag or reverse-acting flag
• Contact options: Standard and heavy-duty contacts
• Operating speed: Instantaneous and fixed time-delay versions
• Typical operating time: Approximately 25 milliseconds for standard instantaneous models
• Case sizes: E2 and E4, depending on the relay arrangement
• Construction: Draw-out relay element
• Mounting: Flush panel mounting
• Coil suppression: Back-EMF suppression diode on selected DC models
• Special version: AR901 CT shorting relay for applicable CT circuits

The coil voltage, contact arrangement, reset method and flag type vary between 7PG11 article numbers. The complete Siemens ordering code should be confirmed before placing an order.

Features

• Provides additional contacts for protection and control circuits
• Suitable for trip, alarm, interlocking and indication duties
• Available with AC and DC operating coils
• Different NO and NC contact combinations are available
• Self-reset, hand-reset and electrically reset versions cover different control schemes
• Operation flags provide a visible local trip indication
• Heavy-duty contacts are available for suitable tripping duties
• Fast operating versions suit protection and intertripping circuits
• Fixed time-delay models are available for selected applications
• Single- and dual-element arrangements provide different contact capacities
• Draw-out construction simplifies testing and replacement
• Existing panel wiring can remain connected during relay replacement
• Back-EMF suppression is available on selected DC coil models
• E2 and E4 cases suit established Reyrolle panel layouts
• Suitable for new switchgear projects and older relay replacement work

Applications

Siemens Reyrolle 7PG11 Auxiliary and Trip Relays are commonly used for:

• Protection relay contact multiplication
• Circuit-breaker trip command repetition
• Intertripping between substations or switchgear panels
• Alarm and annunciation circuits
• Remote trip indication
• Protection relay output expansion
• Lockout and interlocking circuits
• Transformer protection panels
• Feeder protection panels
• Generator protection systems
• Motor protection panels
• Busbar protection schemes
• Incoming and outgoing switchgear panels
• Utility and industrial substations
• Power-generation plants
• Oil and gas electrical systems
• Refinery and petrochemical switchgear
• Steel and cement plant substations
• Mining and material-processing facilities
• Railway and infrastructure power systems
• Protection-panel retrofit projects
• Replacement of older Reyrolle AR relays

The range suits buyers looking for a Siemens auxiliary relay for contact multiplication, a Reyrolle trip relay with a hand-reset flag, or an electromechanical trip relay for substation protection panels.

Siemens Reyrolle AR901 CT Shorting Relay

The Siemens Reyrolle AR901 is a special 7PG11 relay used for current-transformer shorting duties. It is generally selected for protection schemes where CT secondary circuits must be safely shorted when the relay element is withdrawn.

The relay includes four pairs of contacts and uses electrical operation and reset. Shorting contacts within the relay case helps prevent the CT secondary circuit from remaining open during maintenance or removal of the relay element.

The AR901 is used in selected high-impedance protection, CT switching and test arrangements. Its contact rating, wiring and application should be checked against the complete protection scheme before ordering.

Selecting the Correct Siemens 7PG11 Relay

The term “7PG11 relay” does not identify one standard product. Models differ by coil voltage, contact configuration, reset method, flag arrangement and case size.

For an accurate quotation, share:

• Complete Siemens article number
• Existing Reyrolle AR model number, where available
• AC or DC coil requirement
• Required coil voltage
• Number of normally open contacts
• Number of normally closed contacts
• Self-reset, hand-reset or electrical-reset requirement
• Flag indication requirement
• Instantaneous or time-delay operation
• Standard or heavy-duty contact requirement
• Single- or dual-element arrangement
• E2 or E4 case requirement
• Required quantity
• Delivery country

For replacement enquiries, photographs of the relay nameplate, front flag, rear terminal arrangement and existing wiring diagram can help avoid an incorrect selection.

Siemens Reyrolle 7PG11 Supplier and Exporter in India

ARP IMPEX supplies Siemens Reyrolle 7PG11 Auxiliary and Trip Relays for switchgear manufacturers, protection-panel builders, EPC contractors, utilities and industrial maintenance companies.

Our supply scope covers:

• Siemens Reyrolle 7PG111 auxiliary relays
• Siemens Reyrolle 7PG112 auxiliary and trip relays
• Self-reset auxiliary relays
• Hand-reset trip relays
• Electrically reset relays
• Auxiliary relays with operation flags
• Contact multiplication relays
• Intertripping and repeat relays
• Heavy-duty trip relays
• Siemens Reyrolle AR901 CT shorting relays
• Replacement Reyrolle AR relays

The Siemens 7PG11 price depends on the exact coil voltage, number of contacts, reset arrangement, flag type and case configuration. Send the complete part number and quantity for price, availability and export quotation.