SEAWARD

Seaward PR11: HV Phase Comparison

SEAWARD

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Description

PR15D / PR33D Accessories (included):

  • 1 x Proving Unit
  • 1 x Battery Charger
  • 2 x Overhead Line Extensions (1.5m)
  • All leads and instructions
  • Supplied with carrying case
  • Bent adaptors available for use with switch gear

The PR11 provides a means of phase comparison at the point of paralleling two circuits, without the interposition of voltage transformers or secondary wiring earthed neutral systems. A neon type instrument, it is designed for use on earthed neutral systems up to 11KV. The PR15D / PR33D units enable phase angle comparison on earthed neutral systems up to 15KV and 33KV respectively.
The digital reading instruments provide voltage measurements and are supplied with detatchable earth lead, allowing the digital leg to be used as a voltage indicator, independently from the phasing leg.

Indicator Type Neon Indication Digital Reading
Indicator Type PR11 PR15/D

Digital Leg

PR15/D

Phasing Leg

PR33D

Digital Leg

PR33D

Phasing Leg

Maximum System voltage 11kV 15kV 15kV 33kV 33kV
Maximum Voltage to earth 6.6kV 8.6kV 8.6kV 19kV 19kV
Threshold voltage 300V
Measuring Range 0.00kV – 8.6kV 0.00kV – 19.0kV
Resolution 10V 100V
Sensitivity AC/DC AC/DC AC/DC
Circuit current

(IEC 61234-2)

0.9mA nominal

@11.5kV

0.5mA nominal

@15kV

0.5mA nominal

@15kV

0.9mA nominal

@33kV

0.9mA nominal

@33kV

Dielectric leakage current

(IEC 61234-2)

25μA nominal

@13.58kV

7μA nominal

@ 18kV

7μA nominal

@ 18kV

23μA nominal

@ 40kV

17μA nominal

@ 40kV

Length (mm) 330 600 670 600 670
Diameter (mm) 25 25 25 25 25
Handle length (mm) 105 235 240 235 240
Hand guard height (mm) 23.5 23.5 23.5 23.5 23.5
Contact Electrode Type Domed Domed Domed Domed Domed

PR15D / PR33D Specifications
Features:

  • Provides a means of phase angle comparison and indication of phase angle voltage at the point of intended paralleling of two circuits on neutral earthed systems. Both units are digital instruments
  • Chart provides a means of checking phase angle difference of circuits paralleled
  • Kit comprises two elements with resistor chains, one with digital indicator and the second a phasing rod
Unit Voltage* Features Part No
PR/15D 15KV Max Resolution-10V 109A912
PR/33D 33KV Max Resolution-100V 109A913

*Earthed neutral system

PR11 Specifications
Features:

  • For use on 1kV to 11.5kV systems
  • PVC hand guards on handles of elements
  • Neon indicator enclosed in shock resistant sleeve
  • Direct areas possible to all types of switch gear
  • Complies with UK Electricity Council Engineering recommendation G9

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