SuperTAPP

The SuperTAPP system comprises a voltage control relay type RVM and a tap changer monitor relay type RTMU.

RVM Voltage Control Relay

The RVM relay is a solid state voltage regulating relay incorporating the patented TAPP circuit. The main measuring circuit and the integral digital line voltmeter with 3 ranges both work in r.m.s. volts. Four values of basic voltage offset can be applied remotely by telecontrol for load shedding and other purposes. A tap change operations counter is incorporated which counts the automatic operations initiated by the relay.

The RVM relay is available in two models as shown - the RVM/4m and the RVM/5m. Click on the images to the right for detail.

Voltage Control Functions:

  • Basic Voltage Setting
  • Adjustment
  • Digital Voltmeter
  • Current Measurement
  • Alarms
  • Tap Changer Control
  • SCADA inputs for voltage adjustments


RTMU Monitor Relay

The RTMU control and monitor relay is designed for use with SuperTAPP type RVM relays or as a stand alone monitor device for existing or new voltage control systems.

When used in conjunction with RVM voltage control relays, a comprehensive, self contained tap change control system is provided in an extremely cost effective manner, such that minimum external wiring is required to complete the installation.

The RTMU relay is available in two types:

RTMU/1m
Control and monitor unit with Resistor tap position input (BCD optional)

RTMU/2m
Control and monitor unit with return to centre off Auto/Manual position and resistor or BCD tap position input

Monitor Functions:

  • Tap Position Measurement
  • Voltage Measurement (3 phase)
  • Tap Changer Lockout
  • Voltage Monitoring
  • Blocking
  • Alarms


SuperTAPP Accessories

SuperTAPP accessory products for use with RVM and RTMU relays include the following:

  • FTPT mA Transducer (for Tap Position Indication)
  • RTPI Tap Position Indicator
  • FLEM Load Exclusion Module
  • PFM Power Factor Meter
  • FAVT Averaging VT

SuperTAPP accessories

SuperTAPP - mA Transducer

The FTPT/2 is designed for use with the Fundamentals RTMU control and monitor unit type RTMU to provide a remote indication for transformer tap change position.

The unit is small, compact and connects directly to the tap position input of the monitor and outputs a current that is proportional to the tap position. The current ranges provided as standard are 0-10, 0-20 and 4-20mA and can be used to drive other indicators or input to SCADA systems.

Resources:
FTPT/2 User Manual

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SuperTAPP - RTPI Relay

The RTPI relay is designed for use with SuperTAPP type RVM relays or as a stand alone monitor device for existing or new voltage control systems.

When used in conjunction with RVM voltage control relays, a comprehensive, self contained tap change control system is provided in an extremely cost effective manner, such that minimum external wiring is required to complete the installation.

The RTPI relay is available in two types:

RTPI/1m
Tap position indicator

RTPI/2m
Tap position indicator with runaway prevention

RTPI Functions:

  • Tap Position Measurement
  • Tap Change Lockout (not RTPI/1m)
  • Alarm (not RTPI/1m)

Please note: The RTPI/1m is no longer available and production of the RTPI/2m will be discontinued by 31st March 2017.

Resources:

RTMU RTPI Maintenance

RTMU RTPI Operation

RTMU RTPI Specification

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SuperTAPP - Load Exclusion Module

The LEM (load exclusion module) relay is designed for use with SuperTAPP type RVM relays to reduce the impact of power factor deviations caused by any of the following network components:

  • Embedded Generation
  • Capacitor Banks
  • Industrial Loads (heavily lagging power factor)

LEM Functions:

  • Power Factor Correction
  • Load Exclusion for 2 Transformers
  • Auxiliary Switching for Loss of Transformer

Resources:
LEM User Manual
LEM Limitations

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SuperTAPP - Power Factor Meter

The FPFM power factor meter is a commissioning tool for the SuperTAPP voltage control relay type RVM. The RVM relay must have the correct CT/VT relationship in order to operate correctly (30 degree connection). Incorrect connections can result in the following:

  • Permanent voltage errors
  • Reverse LDC
  • No circulating current control
  • Divergent tap changers

Power Factor Meter Functions:

  • VT / CT angle measurement
  • Indication of correct connection

The instrument is self contained and powered from the voltage reference input to the device. The voltage connection is wired directly into the instrument using a flexible power lead, nominally a 'live' and 'neutral'. If a phase to phase voltage is used (the normal case) the meter uses the convention that the 'live' leads the 'neutral.

For the current connection, a 10/0.01 clip-on CT is connected to the meter by two 4 mm sockets. The probe plugs must be connected to the same coloured sockets on the meter.

Resources:
FPFM User Manual

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SuperTAPP - Averaging Voltage Transformer

The FAVT Averaging VT is used with the RVM voltage control relay to facilitate control of double-secondary winding power transformers. VT connections are made to the FAVT unit, averaged and then output to the RVM.

Averaging VT Functions:

  • Voltage averaging of two VT inputs
  • Three phase or single phase VTs possible

Resources:
FAVT User Manual

All Downloads