Protection and control epam range epam T Merlin Gerin quare D Telemecanique
presentation contents page presentation connection characteristics installation ordering information epam T. on in in in in in out epam is a group of modules that may be used: individually to perform a function, in combination with epam or. Each module has been designed to perform a complete function. It includes all the elements required, such as: tripping relays, annunciation, connections. applications epam T pecially designed for transformer protection applications, offering a combination of DGPT or Buchholz plus thermostat information. advantages imple to use: three "tripping" inputs, two "alarm" inputs with the possibility of individual "tripping" input parameter setting, electrically latched inputs, a "tripping" with high breaking capacity linked with two other s: "inhibit closing" and "annunciation", two "alarm signal" s linked with the two "alarm" inputs, local or remote acknowledgment, integrated "lamp test". Clear information display of "tripping" input and status on the front of the device. Dependable operation high level of immunity to electromagnetic disturbances: epam T is designed to operate safely in the highly disturbed electromagnetic environments of HT substations. description The front of epam T includes: indicator lamps: device "on" indicator, "In" to "In" indicators: electrically latched indicators which store the activated status of each of the 'tripping" inputs, "In" and "In" indicators: electrically latched indicators which store the activated status of the "alarm" inputs and indicate the status of the "alarm " and "alarm " relays, "out" indicators: latching indicator which shows switching of the "tripping" relay. a "reset" pushbutton: for acknowledgment of the relay s and associated display when the inputs return to their normal position. While activated, this pushbutton may be used for a lamp test of the indicators on the front of the device. The back of epam T includes: input/ connectors: a -pin connector for the "alarm" inputs and s, an -pin connector for the "tripping" and for the power supply, a -pin connector for the "power ON". epam T has: common-point logic inputs, named "In" to "In", an isolated remote "reset" input, a -contact "tripping" relay ( normally open contacts and normally closed contact), "alarm" relays (changeover contacts), a "power ON" relay ( normally open contact and normally closed contact). epam T operates in ranges of supply voltage (please specify when ordering): - V DC ±%, - V DC ±%, - V DC -% +%. reset sepam T Front of device with display and control of acknowledgement/lamp test..
parameter setting The parameters of the "alarm" inputs made be set so as to make them "tripping" inputs. "larm" inputs In and In may be set individually as "tripping" inputs. The choice is made via two microswitches that are accessible on the left-hand side of epam T. ccess to the microswitches is closed off by a removable plastic cover. The plastic cover should be replaced after the setting has been made. ccess to and identification of microswitches - and -. - - Parameter setting "larm" position. Move the microswitch tab to the left. "Tripping" position Move the microswitch tab to the right. functional and connection diagram com In In - In O O alarm alarm "alarm" inputs In - In In In In In "tripping" inputs reset reset PB + aux. sup. - on In out O O O O B tripping s power on
connection epam T -pin CC connector (power supply and "tripping" s), screw terminal wiring with wires. to. mm max. Each terminal capable of receiving two. mm wires. -pin CC connector ("alarm" inputs and s), screw terminal wiring with wires. to. mm max., each terminal capable of receiving two. mm wires. T B CC connector (power ON), screw terminal wiring for wires. to. mm max. Each terminal capable of receiving two. mm wires. 9 O O O O B tripping annunciation inhibit closing + aux supply power on 9 9 reset inputs In In In In In common alarm alarm B B P + B -VDC -VDC -VDC -VC -VC 9 -VC -VDC -VDC -VDC -VC earthing terminal Terminal identification Each terminal is identified by characters. board slot number ( to ) connector identification letter ( or B) connector terminal number
Example of input wiring (transformer protection) -C +C remote reset EPM T reset thermostat (tripping) buchholz (tripping) thermostat (alarm) buchholz (alarm) In In In In In Com + - power Example of circuit breaker control contact wiring +C on off epam T M CLOE TIP C
characteristics electrical characteristics logic inputs / Vdc / Vdc / Vdc power consumption m m m typical filtering time logic s (relays) ms breaking capacity () / Vdc Vdc Vdc / Vdc contact O.. contacts O to O... making capacity permissible steady state current number of operations under full load response time typical ms (inputs to s) max. ms power supply range typical maxi inrush current consumption consumption / Vdc ± %. W, W < during ms / Vdc ± %. W. W < during ms / Vdc - %, + % W 9 W < during ms environmental characteristics climatic operation IEC - - C to + C storage IEC - - C to + C damp heat IEC - 9% to C mechanical degree of protection IEC 9 IP on front vibrations IEC --- class I shocks IEC -- class I seismic tests IEC -- class I fire NFC glow wire dielectric power frequency IEC - () kv - min../ µs impulse wave resistance IEC - kv electromagnetic radiation IEC -- class x V/m electrostatic discharge IEC -- class III damped MHz wave IEC -- class III ns fast transients IEC -- class IV () published in 9 and amended in 99. marking on our product guarantees their conformity to European directives.
installation dimensions and weight epam mounting latch cut-out max max e = mm max weight: kg. mounting details
Ordering information epam T quantity:... auxiliary power supply: to Vdc... to Vdc... to Vdc... chneider Electric postale address F- Grenoble cedex 9 tel: () telex: merge F s standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication. This document has been printed on ecological paper. C/EN T. Publishing: chneider Electric Design, production: Idra Printing: / 99