Testing three phase meters with closed links

 

میزهای تست کنتور ثابت این شرکت با بهره گیری از متخصصان برجسته داخلی با قابلیتهای مختلف

بنا به سفارش شرکتهای توزیع برق با لحاظ کردن نیازها و خواست مشتریان طراحی و تحویل می شود

در طراحی میزهای تست نیازهای آتی و احتمالی و خواستهای آتی مشتریان در نظر گرفته شده و بسهولت درخواستهای جدید مشتریان در تجهیز به  قابلیتهای جدید و یا بروزرسانی بدوم تعویض کل دستگاه  قابل اجرا می باشد .لذا این دیدگاه ها به ما این امکان را می دهد که دستگاههای تست با امکانات و قابلیتهای مختلف بنا به سفارش تهیه اجرا گردد.ف 

خدمات بعد از فروش ۵ ساله و گارانتی یک سال و پایبندی به این تعهد در مقابل شرکتهای توزیع برق تهران و استان تهران و دیگر استانها نقطه قوت این شرکت می باشد که در سالیان گذشته از ۱۳۷۸تا حال متعهد بوده ایم و اجرا کرده ایم

With ever increasing frequency, meter manufacturers and meter operators are producing and using
meters that do not allow the links between the current and voltage measuring circuits  to
be opened for test or calibration purposes. There
are several reasons for this but the most important
for manufacturers is the lower manufacturing cost
of single-phase meters using resistive shunts for
current measurement. To provide the facility to isolate the current and voltage paths of these meters
would result in a significantly higher manufacturing
cost. During normal operation, this isolation would
not even be technically feasible. A second reason
for not supplying meters with removable I-P links is
that the presence of these links makes the possibility of fraud by customers more likely.
The same consideration also applies to non-CT operated three-phase meters. (Whole current meters).
These meters are therefore sometimes also manufactured with I-P links which cannot be disconnected from outside the sealed meter case. In this
case, again, the meter is less expensive to manufacture than if accessible disconnection links are
provided inside the terminal cover.
For meters designed for use with external transformers, the terminal block provides access to all
current and voltage terminals in order to be able to
connect the required transformers.
The above reasons support the concept of providing whole current meters with closed I-P connections for both domestic and commercial use. This
approach allows cost reduction in production and
also reduces the likelihood of energy theft.
There are however, some important implications in
this approach, for the specification of meter test
equipment.