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ABB PR512 Manual

Microprocessor-based self-supplied protection relays
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Medium Voltage Products
PR512
Microprocessor-based self-supplied
protection relays

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Summary of Contents for ABB PR512

  • Page 1 Medium Voltage Products PR512 Microprocessor-based self-supplied protection relays...
  • Page 3 DESCRIPTION CHARACTERISTICS AND ORDERING CODES PR512/P (50-51) UNIT PR512/P (50-51-50N-51N) UNIT PR512/PD (50-51-50N-51N + DIALOGUE) UNIT TIME-CURRENT CURVES OVERALL DIMENSIONS ELECTRICAL CIRCUIT DIAGRAM...
  • Page 5 DESCRIPTION Special features Protection always active Electromagnetic compatibility Service conditions Degrees of protection Technical documentation Quality System and Environmental Management System...
  • Page 6 DESCRIPTION The PR512 relays are devices using digital microprocessor-based technology to obtain data processing regarding the protection. The PR512 are used as switchboard protection units and provide protection of the installations, combined with ABB medium voltage HD4 series circuit-breakers. Special features...
  • Page 7 Protection always active Thanks to these characteristics, the PR512 are also suitable for use in unmanned distribution The PR512 are the self-supplied type of relay and substations without auxiliary services. ensure complete installation protection even without an auxiliary power supply.
  • Page 8 DESCRIPTION Electromagnetic compatibility Service conditions The PR512 microprocessor-based protection – Operating temperature: relays ensure correct operation and are immune - 5 °C ... + 40 °C to unwarranted trips, even in the presence of – Storage temperature: interference caused by electronic apparatus, by - 40 °C ...
  • Page 9 CHARACTERISTICS AND ORDERING CODES Current transformers Overload values Earth fault external toroid Power supply Opening solenoid Protection and trip signals Binary input for control function TEST function Signalling outputs Technical data of the relay contacts Measuring function Ordering codes...
  • Page 10 Earth fault external toroid side of the circuit-breaker. The PR512 relay can be used with an external toroid to detect the earth fault current, as long as it has the following characteristics: Opening solenoid –...
  • Page 11 (electronic part and YO3 opening cable. Screening must be earthed on the metal solenoid) can be carried out. box of the PR512 (please refer to the connection By means of the 9 PIN connector, the TT2 Test diagram enclosed with the circuit-breaker).
  • Page 12 CHARACTERISTICS AND ORDERING CODES Signalling outputs Technical data of the relay contacts The signalling relay contacts have the following • Signalling output by means of closing contact. electrical characteristics: A closing contact is available to signal relay trip – maximum interrupted current 0.8 A (K51/YO3).
  • Page 13 PR512/P UNIT (50-51) Protection functions Protection against overcurrent (51) Selection of threshold I> value Selection of type of I> curve Selection of t> trip time Protection against instantaneous or delayed short-circuit (50) Selection of I>> threshold value Selection of t>> trip time...
  • Page 14 PR512/P UNIT (50-51) Protection functions The following settings are possible: The PR512/P protection unit (50-51) • 32 threshold current values (I>) carries out two independent protec- 0.200 0.225 0.250 0.275 tion functions which can be ex- 0.300 0.325 0.350 0.375 cluded: –...
  • Page 15 Parameters can take on the following Protection against instantaneous or values according to the curve selected. delayed short-circuit (50) • Normal inverse time-delay curve (NI): This function makes a family of definite adjustable = 0.02 = 0.14. time curves available, indicated by the symbol I>>. •...
  • Page 16 PR512/P UNIT (50-51) Selection of t>> trip time The function of protection I>> has a single definite curve adjustable to 31 values. The trip time of the protection is set by using the Dip Switches as shown in the figure.
  • Page 17 PR512/P (50-51-50N-51N) UNIT Protection functions Earth fault external toroid Protection against earth fault (51N) Selection of threshold Io> value Selection of type of Io> curve Selection of to> trip time Protection against instantaneous or delayed earth fault (50N) Selection of Io>> threshold value Selection of to>>...
  • Page 18 The PR512/P (50-51-50N-51N) unit This function makes four different families of carries out all the functions of the protection curves available, defined as follows PR512/P (50-51) unit as well as the (IEC255-3): following protection functions: – definite time – 51N protection against earth fault: –...
  • Page 19 The following settings are possible: Parameters can take on the following values according to the curve selected. • 16 threshold current values (Io>) • Normal inverse time curve (NI): = 0.02 = 0.14. 0.100 0.150 0.200 0.250 • Very inverse time curve (VI): 0.350 0.400 0.450...
  • Page 20 PR512/P (50-51-50N-51N) UNIT Protection against instantaneous or The following settings are possible: delayed earth fault (50N) • 16 threshold current values (Io>>) This function makes a family of definite adjustable time curves available, indicated by the symbol 10.5 Io>>. The corresponding trip time is indicated by the x Io>...
  • Page 21 Rated and setting currents Current Protection functions transformer (CT) I> I>> Io> Io>> 0.2 ... 1 x In [A] 2.5 ... 20 x I> [A] 0.1 ... 1 x In [A] 2.5 ... 20 x Io> [A] 8 ... 40 20 ...
  • Page 23 PR512/PD (50-51-50N-51N + DIALOGUE) UNIT Protection and dialogue functions Binary inputs Outputs for controlling the shunt opening and closing releases Dialogue function Electrical characteristics of the relay contacts...
  • Page 24 PR512/P (50-51- ard. 50N-51N) unit as well as also For further details, ABB can be asked for the offering the possibility of remote following documents: control of the circuit-breaker, of its protection functions and of current •...
  • Page 25 Data transmitted The PR512/PD unit is able to transmit the follow- ing information: a) number of circuit-breaker mechanical opera- tions b) parameters of the protection functions c) phase and homopolar currents (with minimum value of 5% In) d) “Low current” indication with current less than...
  • Page 26 PR512/PD (50-51-50N-51N + DIALOGUE) UNIT Electrical characteristics of the relay contacts The YO and YC control relay contacts have the following electrical characteristics: – maximum interrupted current: – maximum interrupted voltage: 250 Vca 130 Vcc – maximum interrupted load at 48 Vdc: –...

  • Page 27: Time-Current Curves

    TIME-CURRENT CURVES Definite time curve (DT) Normal inverse time-delay curve (NI) Very inverse time-delay curve (VI) Extremely inverse time-delay curve (EI) Time-current curves for earth fault...
  • Page 28 TIME-CURRENT CURVES Definite time curve (DT) I>> / I> t [s] I > Definite Time Curve (IEC 255-3) I>> K = 1.6 1.55 > K = 0.1 >> 0.05 0.01 I/I> [kA]...
  • Page 29 Normal inverse time-delay curve (NI) I>> / I> t [s] I > Normal Inverse Time Curve (IEC 255-3) I>> K = 1.6 > 1.55 K = 0.1 >> 0.05 0.01 I/I> [kA]...
  • Page 30 TIME-CURRENT CURVES Very inverse time-delay curve (VI) I>> / I> t [s] I > Very Inverse Time Curve (IEC 255-3) I>> K = 1.6 > 1.55 K = 0.1 >> 0.05 0.01 I/I> [kA]...
  • Page 31 Extremely inverse time-delay curve (EI) I>> / I> t [s] I > Extremely Inverse Time Curve (IEC 255-3) I>> K = 1.6 1.55 > K = 0.1 >> 0.05 0.01 I/I> [kA]...
  • Page 32 TIME-CURRENT CURVES Time-current curves for earth fault The time-current curves for homopolar earth fault (Io>; Io>>) are identical to those for protection against overload and against short-circuit (I>; I>>). For the operating fields, please see what is indicated on page 25 and following pages.

  • Page 33: Overall Dimensions

    OVERALL DIMENSIONS Dimensions and fixing...
  • Page 34 OVERALL DIMENSIONS Dimensions and fixing Threaded holes are provided on the release box for application of the fixing brackets for assembly The overall dimensions are as follows: on the compartment door. – height 160 mm – width 130 mm N.B. The dimensions indicated include the overall –...

  • Page 35: Electrical Circuit Diagram

    ELECTRICAL CIRCUIT DIAGRAM Diagrams of the applications Operating state shown Caption Notes Connections Graphic symbols for electrical diagrams...
  • Page 36 ELECTRICAL CIRCUIT DIAGRAM Diagrams of the applications The diagrams shown correspond with ABB 401530 document. However, they are for indicative purposes. In case of use, it is advisable to ask for the latest updated document. To take evolution of the product into consideration, it is useful to refer to the circuit diagram supplied with each circuit-breaker.
  • Page 37 Operating state shown The diagram is shown under the following conditions: – circuit-breaker open and connected (see note B) – circuits de-energised – circuit-breaker closing springs discharged – overcurrent release not tripped PR512/PD (50-51-50N-51N)
  • Page 38 (see note F) extremely inverse trip time (with Uaux. = Auxiliary power supply voltage (see the PR512/P unit this function is note D) only supplied on request) = Serial interface with the control – against earth fault with definite...
  • Page 39 E) For connection of the EIA RS485 serial line, necessary to short-circuit poles XK4-3 and see the following documentation: XK4-4 of the PR512/PD release. Moreover, the – examples of distribution of the EIA RS485 circuit-breaker auxiliary circuits are terminated serial communication 401517 at a terminal box called XV instead of at –...
  • Page 40 ELECTRICAL CIRCUIT DIAGRAM Connections Graphic symbols For the PR512 release connections use the following types of cable: – auxiliary power supply (Uaux.) = screened Mechanical, pneumatic or hydraulic cable TI4069/2x0.2 code 07108 connection – external opening control (SO3) = screened cable TI4069/2x0.2 code 07108 (max.
  • Page 41 Conductor connections Power circuit-breaker Terminal or clamp Control coil (general sign) Overcurrent unit with long adjustable Socket and plug (female and male) time-delay characteristic Overcurrent unit with long inverse Current transformer adjustable time-delay characteristic Current transformer with wound Overcurrent unit with short adjustable secondary and with primary consisting time-delay characteristic of three bushing conductors...
  • Page 44 Power Products Division technical development of the product. Unità Operativa Sace-MV Via Friuli, 4 Copyright 2010 ABB. All rights reserved. I-24044 Dalmine Tel.: +39 035 6952 111 Fax: +39 035 6952 874 e-mail: sacetms.tipm@it.abb.com...

This manual is also suitable for:

Pr512/pPr 512/pd