Consulta sobre normativa de tensiones máximas en lineas de media tensión
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Norberto Damián Puefil
Oct 16, 2020, 11:09:13 AM10/16/20
to listaele...@googlegroups.com
Gente:
En esta oportunidad los molesto con la siguiente consulta: (principalmente a los argentinos en cuanto a reglamentación, pero a todos por valores condenatorios)
¿Cual es la tensión máxima que puede entregar un distribuidor de energía a un usuario en 13.2kV?
En este momento estamos teniendo problemas dado que la distribuidora nos está entregando en lugar de 13.2 kV, valores que oscilan entre los 12,7 y los 15,2 kV debido a la entrada en servicio de un parque eólico. Actualmente, la baja tensión no es un problema pero las sobretensiones están quemando los descargadores de las UPS distribuidas por la central.
Desde ya, agradeceré nociones técnicas y en especial, de reglamentaciones dado que, en general, toda reglamentación que he encontrado se refiere a valores de tensión "mínimos" pero no sé si esto es simétrico con respecto a la máxima.
Aprovecho a saludarlos desde la patagonia Argentina
Norberto Puefil
Ing. Electricista
HPDA-Argentina
(+54 02942 15404746)
(+54 02942 15404746)
Norberto Damián Puefil
Oct 16, 2020, 11:30:48 AM10/16/20
to Marcos Ramirez, listaele...@googlegroups.com
MUCHAS GRACIAS!!! Lo tendrás para compartir?
Saludos
Norberto Puefil
Ing. Electricista
HPDA-Argentina
(+54 02942 15404746)
(+54 02942 15404746)
El vie., 16 oct. 2020 a las 12:28, Marcos Ramirez (<mark...@gmail.com>) escribió:
Colega, en el standard ANSI C84.1 (el cual es adoptado y adaptado a estándares y normativas locales en algunos países) indica los rangos de tensión máxima y mínima respectivos.SaludosMarcos RamírezIngeniero Electricista SeniorVenezuela
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Ignacio José Domínguez Mata
Oct 16, 2020, 12:28:08 PM10/16/20
to lista electrica SALVADOR MARTINEZ
Hola a todos. Lo que sigue está tomado de:
http://voltage-disturbance.com/voltage-quality/voltage-tolerance-standard-ansi-c84-1/
ANSI C84.1 establishes nominal voltage ratings for utilities to
regulate and it also establishes voltage tolerance at the facility
load equipment. Voltage variation over the course of a time, season,
loading is something that the utilities and customer have to tolerate.
However, it is possible to design a power system that should work
seamlessly across all possible excursions of the voltage as defined in
the standard. ANSI C84.1 provides this tolerance band for the service
entrance voltage or the service voltage and the utilization voltage or
the voltage at the point of use.
Service Voltage: Voltage at the electric utility service. In
distribution systems this is usually considered the voltage at the
meter socket or entrance switch.
Utilization Voltage: Voltage at the end user load. This is generally
considered to be the voltage at the terminals of the device or
appliance or the voltage at the convenience outlet to which these
terminals are connected. This voltage is the facilities
responsibility.
Service voltage requirements are tighter than utilization voltage as
the standard allows for some voltage drop within a facility.
It should be noted that the voltage tolerance is for sustained voltage
and not momentary voltage variation due to switching or fault etc. The
ANSI C84.1 voltage tolerance graph is provided below. It can be noted
that two ranges are provided. Range A and Range B.
ANSI C84.1
ANSI C84.1
Range A: Range A provides the normally expected voltage tolerance on
the utility supply for a given voltage class. Variations outside the
range should be infrequent. The utilization equipment (loads) are
expected to function and provide full satisfactory performance for
range A voltage tolerance.
Service Voltage: It is expected that most service voltage
variation occurs within this range. The occurrence of service voltage
variation outside this range should be infrequent. For range A this
variation of allowable service voltage is +5% to -5% for system
operating 600V and below. For systems operating above 600V this range
is +5% to -2.5%.
Utilization Voltage: End user equipment should be designed to
operate effectively and to provide full performance within the limits
of range A service voltage. The tolerance for range A utilization
voltage is +5% to -10%.
Range B: Range B provides voltage tolerances above and below range A
limits that necessarily result from practical design and operating
conditions on supply or user systems or both. These conditions should
be limited in extent, frequency and duration. When these variations
occur, measures should be taken within a reasonable time frame to get
back to range A.
Service Voltage: For range B this variation of allowable service
voltage is +5.8% to -8.3% for system operating 600V and below. For
systems operating above 600V this range is +5.8% to -5%.
Utilization Voltage: End user equipment should be designed to
provide acceptable performance for voltages in range B, although not
necessarily as good performance as in range A. The tolerance for range
B utilization voltage is +5.8% to -13.3%.
The following selector can be used to get the range A voltage
tolerances for common Low Voltage systems.
VOLTAGE TOLERANCE - Low Voltage
Based on ANSI C84.1 Range A Tolerance
Nominal Voltage*
120 V
208 V
240 V
277 V
480 V
600 V
The following selector can be used to get the range A voltage
tolerances for common Medium Voltage systems.
VOLTAGE TOLERANCE - Medium Voltage
Based on ANSI C84.1 Range A Tolerance
Nominal Voltage*
13,800 V
Range A Service Voltage 14,490V - 13,460V
Nominal Voltage13,800 V
Range A Utilization Voltage 14,490V - 12,420V
Nominal Voltage13,800 V
It is recognized that due to conditions beyond the control of
supplier, user or both there will be periods when the voltages are
outside range B limits. Utilization equipment may not operate under
such conditions and protective devices may operate to protect the
equipment. When voltages occur outside the limits of range B, prompt
corrective action shall be taken. The urgency for such action will
depend on many factors, such as the location and nature of the loads
or circuits involved, and the magnitude and duration of the deviation
beyond range B limits (ANSI C84.1-2006).
En Venezuela tenemos la norma Covenin 159, que establece los rangos de
tensión. Como dice Marcos, están tomados de la ANSI C84.1
Saludos,
Ignacio Domínguez
Venezuela
El 16/10/20, Norberto Damián Puefil <npu...@gmail.com> escribió:
>>> <https://groups.google.com/d/msgid/listaelectricaSM/CAHEdUjHBz5Bbm-QsSx3unXpgZuv4R1v9yRYbAC0HDr2bwnfxqg%40mail.gmail.com?utm_medium=email&utm_source=footer>
>>> .
> https://groups.google.com/d/msgid/listaelectricaSM/CAHEdUjH%3Dgy1Uawd31ZXDSAUf3ERAhYKwb5zjXg6GbVxXZN56Pg%40mail.gmail.com.
>
http://voltage-disturbance.com/voltage-quality/voltage-tolerance-standard-ansi-c84-1/
ANSI C84.1 establishes nominal voltage ratings for utilities to
regulate and it also establishes voltage tolerance at the facility
load equipment. Voltage variation over the course of a time, season,
loading is something that the utilities and customer have to tolerate.
However, it is possible to design a power system that should work
seamlessly across all possible excursions of the voltage as defined in
the standard. ANSI C84.1 provides this tolerance band for the service
entrance voltage or the service voltage and the utilization voltage or
the voltage at the point of use.
Service Voltage: Voltage at the electric utility service. In
distribution systems this is usually considered the voltage at the
meter socket or entrance switch.
Utilization Voltage: Voltage at the end user load. This is generally
considered to be the voltage at the terminals of the device or
appliance or the voltage at the convenience outlet to which these
terminals are connected. This voltage is the facilities
responsibility.
Service voltage requirements are tighter than utilization voltage as
the standard allows for some voltage drop within a facility.
It should be noted that the voltage tolerance is for sustained voltage
and not momentary voltage variation due to switching or fault etc. The
ANSI C84.1 voltage tolerance graph is provided below. It can be noted
that two ranges are provided. Range A and Range B.
ANSI C84.1
ANSI C84.1
Range A: Range A provides the normally expected voltage tolerance on
the utility supply for a given voltage class. Variations outside the
range should be infrequent. The utilization equipment (loads) are
expected to function and provide full satisfactory performance for
range A voltage tolerance.
Service Voltage: It is expected that most service voltage
variation occurs within this range. The occurrence of service voltage
variation outside this range should be infrequent. For range A this
variation of allowable service voltage is +5% to -5% for system
operating 600V and below. For systems operating above 600V this range
is +5% to -2.5%.
Utilization Voltage: End user equipment should be designed to
operate effectively and to provide full performance within the limits
of range A service voltage. The tolerance for range A utilization
voltage is +5% to -10%.
Range B: Range B provides voltage tolerances above and below range A
limits that necessarily result from practical design and operating
conditions on supply or user systems or both. These conditions should
be limited in extent, frequency and duration. When these variations
occur, measures should be taken within a reasonable time frame to get
back to range A.
Service Voltage: For range B this variation of allowable service
voltage is +5.8% to -8.3% for system operating 600V and below. For
systems operating above 600V this range is +5.8% to -5%.
Utilization Voltage: End user equipment should be designed to
provide acceptable performance for voltages in range B, although not
necessarily as good performance as in range A. The tolerance for range
B utilization voltage is +5.8% to -13.3%.
The following selector can be used to get the range A voltage
tolerances for common Low Voltage systems.
VOLTAGE TOLERANCE - Low Voltage
Based on ANSI C84.1 Range A Tolerance
Nominal Voltage*
120 V
208 V
240 V
277 V
480 V
600 V
The following selector can be used to get the range A voltage
tolerances for common Medium Voltage systems.
VOLTAGE TOLERANCE - Medium Voltage
Based on ANSI C84.1 Range A Tolerance
Nominal Voltage*
13,800 V
Range A Service Voltage 14,490V - 13,460V
Nominal Voltage13,800 V
Range A Utilization Voltage 14,490V - 12,420V
Nominal Voltage13,800 V
It is recognized that due to conditions beyond the control of
supplier, user or both there will be periods when the voltages are
outside range B limits. Utilization equipment may not operate under
such conditions and protective devices may operate to protect the
equipment. When voltages occur outside the limits of range B, prompt
corrective action shall be taken. The urgency for such action will
depend on many factors, such as the location and nature of the loads
or circuits involved, and the magnitude and duration of the deviation
beyond range B limits (ANSI C84.1-2006).
En Venezuela tenemos la norma Covenin 159, que establece los rangos de
tensión. Como dice Marcos, están tomados de la ANSI C84.1
Saludos,
Ignacio Domínguez
Venezuela
El 16/10/20, Norberto Damián Puefil <npu...@gmail.com> escribió:
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Norberto Damián Puefil
Oct 16, 2020, 12:46:01 PM10/16/20
to Ignacio José Domínguez Mata, lista electrica SALVADOR MARTINEZ
Muchas gracias por el tiempo tomado en responder! El tema con esa normativa es que dice al principio que es para 60 Hz y, dado que tengo que hacer algún reclamo "legal", no me sirve dado que nuestra frecuencia es 50 Hz.
Si bien, en cuanto a lo técnico, lo comprendo y coincido, desde la parte legal, lo primero que me dián es que no aplica por ser para 60 Hz.
Saludos
Norberto Puefil
Ing. Electricista
HPDA-Argentina
(+54 02942 15404746)
(+54 02942 15404746)
Para ver este debate en la Web, visita https://groups.google.com/d/msgid/listaelectricaSM/CAOpzebaTLYA0GmC-9dtf4H1a8Qt9YOmtNQ3yuKdtVobDW11rhw%40mail.gmail.com.
Jose Teodulo Gutiérrez Huamaní
Oct 16, 2020, 1:06:09 PM10/16/20
to Norberto Damián Puefil, listaele...@googlegroups.com
Ing. Norberto,
Como es un problema con el voltaje suministrado, no le servirán las normas recomendadas para diseño o construcción de instalaciones eléctricas. Usted necesita presentar un reclamo a la Distribuidora, para ello debe buscar la Norma de calidad de la energía eléctrica vigente de su País, particularmente para el nivel de tensión le llaman "calidad del producto", ahí están los valores límites máximos y mínimos que son vinculantes en los contratos de suministro, estos valores son auditados y sancionados por el ente regulador, en Argentina es el ENRE. Todos los países no tienen los mismos valores, asi mismo la aplicación de cumplimiento también varía, es por etapas porque requiere inversiones en mejoras de la infraestructura eléctrica para llegar a los niveles de calidad que se desea.
Presente un reclamo en base a la norma de calidad de su Pais, la distribuidora realizará una medición de los valores de tensión en periodos de intervalos y tiempo que definen la norma, hay plazos definidos para la atención del reclamo y solucionar el problema.
Atentamente,
Ing. Jose Teodulo Gutierrez
Ica _ Peru.
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Norberto Damián Puefil
Oct 16, 2020, 3:17:02 PM10/16/20
to Jose Teodulo Gutiérrez Huamaní, listaele...@googlegroups.com
Muchas gracias por su respuesta.
Saludos
Norberto Puefil
Ing. Electricista
HPDA-Argentina
(+54 02942 15404746)
(+54 02942 15404746)
Horacio Ibañez
Oct 16, 2020, 4:10:28 PM10/16/20
to Norberto Damián Puefil, listaele...@googlegroups.com
Hola, el valor máximo de tensión establecido por norma IEC 60038 para una tensión nominal de 13,2 kV, es de 13,97 kV.
No sé si existe Reglamentación argentina AEA, disposición ENRE, o de las distribuidoras, pero si las hay, generalmente transcriben las normas IEC.
Adjunto tabla y norma completa.
Saludos a todxs.
Atte.:
Ing. Horacio Ibañez
Rosario- Argentina
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Marcos Ramirez
Oct 21, 2020, 7:51:06 AM10/21/20
to Norberto Damián Puefil, listaele...@googlegroups.com
Colega, en el standard ANSI C84.1 (el cual es adoptado y adaptado a estándares y normativas locales en algunos países) indica los rangos de tensión máxima y mínima respectivos.
Saludos
Marcos Ramírez
Ingeniero Electricista Senior
Venezuela
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