APCS the Signal Conditioning Specialists

 

VPR271 - Voltage Presence Relay

Product Diagram

The VPR271 provides an economical and compact solution to monitoring of 3-phase voltage up to 700V phase to phase with two relay outputs indicating; - Loss of three phases - Loss of one phase. The 3-phase voltage plus neutral can be directly connected to the VPR271 as long as the maximum phase-to-phase voltage does not exceed 700V. To use the VPR271 with higher voltages, a step down transformers (PT) must be used.

Neutral must be connected for proper operation. Due to its total width of only 22.5 mm and using the 35mm Din-Rail mounting arrangement, the VPR271 is ideal for "nestmounting" in field enclosures or as a "space saver" in control cabinets. The VPR271 is signal powered from the incoming AC-voltage.

Function - With any phase present the internal step down DC/DC converter will energise relay 1. - Each phase is monitored by a trip circuit providing LED indication of phase presence and de-energizing relay 2 if any one of the three phases fail. - If all three phases are present then both relay 1 and relay 2 are energised.

Keys

Inputs

ac VSignal Powered

Functions

ac TransducerAlarm

Outputs

Relay

Attachments

 
 

Most drawings are supplied in PDF format. Portable Document Format is used to present documents in a manner independent of application software, hardware, and operating systems.

 

Lead Time for a Niche Product

 

Niche products are usually designed to perform less common functions and may contain made to order assemblies. Niche products have longer delivery times, typically 6 days.

Alternate Products

 

Order Processing

 
Information

APCS makes and customises products according to a customers order. Upon receipt of the customers order the following information is required before manufacture, allocation or deliver until full details are given, these include;

  1. Identity of purchaser. Company name, ABN (Australian companies), street address and accounts email address.
  2. Required delivery address.
  3. Full part number and calibration detail required to manufacture items.
  4. Total on purchase order to include delivery charges. Orders received with missing information will be entered and marked to indicate missing details and returned to the customer for correction or approval.

Compliance with the above ensures that your items are manufactured and delivered according to the required specifications.

Standard delivery times commence after the order has been approved for processing.