Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz

Product catalog summary

Introduction
Frascold is a well-established company with a 75-year history in manufacturing compressors for refrigeration and air conditioning. The company is recognized for its technological advancements and strong customer relations, contributing to its international reputation.

Product Overview
The document focuses on the RTS and NR series of refrigeration twin screw compressors, designed for medium and low-temperature applications. These compressors are suitable for multi-compressor power packs and offer a cooling capacity of up to 440 kW across 24 models.

Specifications
The compressors are designed for continuous operation with minimal maintenance, offering high performance and reduced noise. They are available in three versions optimized for different applications: RTSL/NRL for low evaporating temperatures, RTSH/NRH with motor type 1 for medium-high evaporating temperatures, and RTSH/NRH with motor type 2 optimized for R134a.

Efficiency
The compressors feature twin screws with innovative profiles for optimal performance, high-efficiency electric motors with thermal protection, and are designed for operation with economizers and variable frequency drives.

Applications
Compatible with refrigerants like R134a, R404A, R507A, R22, and R290, with ATEX-approved accessories available upon request. Suitable for low evaporating temperature applications up to -50°C.

Reliability
These compressors boast high mechanical resistance and special long-life bearings, with features to handle transient states and ensure low noise and vibration levels.

Additional Features
Equipped with an electronic control module for monitoring and safety, including phase presence and rotation checks. They are designed for economizer operation, enhancing cooling capacity and efficiency.

Standard and Optional Accessories
Standard accessories include capacity control, start unloader, and an electronic protection module. Optional accessories include oil separators, air and water-cooled oil coolers, and economizer kits.

Performance Standards
Performance data is provided according to the European Standard EN12900, ensuring reliable comparisons with other brands.

Performance and Control
The RTS series offers two-stage control (50-100%) and the NR series offers three-stage control (50-75-100%). They are equipped with an electronic protection module that monitors motor temperature, phase presence, rotation direction, and start delay.

Oil Injection System
The standard oil injection set includes an oil filter, flow switch with electronic control, solenoid valve, and sight glass, ensuring efficient lubrication and operation.

Economizer Operation
All models are designed for economizer operation, significantly enhancing cooling and system performance.

Technical Data
Detailed technical data for each compressor model includes motor size, displacement, capacity control, maximum power consumption, and electrical data.

Operating Limits
The compressors can operate within specified limits shown in application diagrams. Key parameters include evaporating temperature, condensing temperature, and suction superheating.

Oil Cooling
Additional oil cooling may be required under certain operating conditions.

Graphical Data
Graphs illustrate the relationship between evaporating and condensing temperatures for different compressor models, highlighting performance variations across temperature ranges.

Recommendations
For specific performance data and operating conditions, users should consult the Frascold Selection Software FSS2, which also provides guidance on when additional oil cooling is necessary.

Catalog excerpts

Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-1

RTS - NR Refrigeration Twin Screw Compressors Schraubenverdichter für Kältesysteme Холодильные двухвинтовые компрессоры FCAT250.1 EN - DE - RU Product Selection Catalogue Version 50Hz

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-2

Frascold was founded 75 years ago and is looking to the future. Frascold feiert seinen 75. Geburtstag und schaut in die Zukunft. Компания Frascold основана 75 лет назад и смотрит в будущее. Its long journey from 1936 to the present day has been marked by transformations and attention to cutting-edge technology. Von 1936 bis heute, ein langer Weg voller Veränderungen und immer mit dem Augenmerk auf die modernsten Technologien. Долгий путь с 1936 года и до наших дней был отмечен преобразованиями и вниманием к современным технологиям. From its founding, Frascold has produced compressors for the...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-3

Refrigeration Twin Screw Compressors Schraubenverdichter für Kältesysteme Холодильные двухвинтовые компрессоры RTS and NR compressors have been developed for universal refrigeration applications in medium and low temperature and are suitable for operation in parallel multicompressors power packs. The range covers a cooling capacity up to 440 kW and includes 24 different models with displacements from 120 to 360 m³/h at 50 Hz. These compressors have been designed to operate continuously for long periods, without failures and without significant maintenance operations, guaranteeing coefficients...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-4

Compressori a vite per refrigerazione Refrigeration Twin Screw Compressors Холодильные двухвинтовые компрессоры rotation might occur. Automatic start unloader. Low noise and absence of vibrations The body construction implements noise reduction technical solutions. The innovative screw profile and the special bearings contribute to reduce the noise level of these compressor to a value which is much lower than that of similar models from the competition available on the market. Partial load • RTS series: two steps (50-100%) • NR series: three steps (50-75-100%) Oil injection system The oil injection...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-5

Compressori a vite per refrigerazione Refrigeration Twin Screw Compressors Холодильные двухвинтовые компрессоры Economizer operating performance Data referred to economizer operation include liquid subcooling. The liquid temperature at the economizer inlet port on the compressor is defined as 5K above the saturated intermediate temperature according to EN12900. Leistungsangaben mit Economizer Die Leistungsangaben mit Economizer verstehen sich einschließlich Unterkühlung. Die Temperatur der Flüssigkeit am Economizer-Eintritt am Verdichter ist gemäß EN12900 definiert mit 5K über der gesättigten...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-6

Semi-hermetic screw compressors Halbhermetische Schraubenverdichter Полугерметичные винтовые компрессоры RTS and NR semi-hermetic twin screw compressors are available in a wide range of models with displacements from 120 to 360 m³/h at 50 Hz Die halbhermetischen Schraubenverdichter RTS und NR Serie sind in einer breiten Reihe von Modellen mit Fördervolumen von 120 m³/h bis 360 m³/h zur Verfügung “RTS” и “NR” полугерметичные винтовые компрессоры доступны в широком диапазоне моделей с объемной производительностью от 120 до 360 м³/ч при 50 Гц Model designation Modellbezeichnung Название модели NRL3-100-360Y...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-7

Technical data Technische Daten Технические харахтеристики Capacity control Electrical Data Elektrische Daten Макс. Портребл. Мощность Anschlüsse Мотор Присоедин. b Compressor type Motor Connection Motor Pipe connections Suction Discharge Rohranschlüsse Gewicht Saugleistung Druckleistung Электрические Соединения Вес характеристики Всасывание Нагнетание f a Motor size: see application limits at page 10-11 a Motorgroße: Einsatzgrenze auf Seite 10-11 a Версия мотора: см. границы применения ст. 10-11 b Other voltages available upon request b Andere Spannungen auf Anfrage b Другие напряжения по запросу...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-8

Suction and discharge valves with soldering conn. Saug- und Druck-Absperrventil mit Lötanschlüssen Запорный клапан на нагнетании и всасывании с выводами для пайки Oil filter Ölfilter Масляный фильтр Oil flow switch Öldurchfluss-Wächter Реле протока масла T00EC28 Electronic control module T00EC28 Elektronisches Steuermodul T00EC28 Электронный блок управления Oil solenoid valve Öl-Magnetventil Масляный соленоидный клапан Sight glass Schauglas Смотровое стекло Rubber vibration dampers Schwingungsdampfer Резиновые виброизоляторы Unloaded start Anlaufentlastung Разгрузка при пуске Capacity control...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-9

Oil injection Öleinspritzung Впрыск масла discharge line Линия нагнетания Ölabscheider Маслоотделитель Масляный фильтр Реле протока масла Масляный соленоидный клапан sight glass * Смотровое стекло check valve Обратный клапан suction line Линия всасывания discharge pressure regulating valve Регулятор давления нагнетания pressure equalization line shut-off valve Запорный клапан solenoid valve Соленоидный клапан * standard extent of delivery * Standardausstattung * поставляется в стандартной комплектации Линия возврата масла

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-10

Operating limits Einsatzgrenzen Границы применения Compressors operation is possible within the limits shown on the application diagram. For the operating limits of each compressor, please see Frascold Selection Software. Работа компрессора допускается в пределах, указанных на диаграммах. Для пределов применения конкретного компрессора смотрите программу подбора FRASCOLD Selection Software. Die Betrieb von Verdichter Können innerhalb von Diagramme Anwendung. Für die Einsatzgrenzen der einzeinen Verdichter, siehe Frascold Selection Software Evaporating Temperature°C Evaporating Temperature°C Evaporating...

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Refrigeration Semi-hermetic screw compressor RTS / NR - 50 Hz-11

Operating limits Einsatzgrenzen Границы применения Compressors operation is possible within the limits shown on the application diagram. For the operating limits of each compressor, please see Frascold Selection Software. RTSH-NRH Condensing Temperature °C RTSH-NRH RTSL-NRL Evaporating Temperature°C Evaporating Temperature°C Работа компрессора допускается в пределах, указанных на диаграммах. Для пределов применения конкретного компрессора смотрите программу подбора FRASCOLD Selection Software. Die Betrieb von Verdichter Können innerhalb von Diagramme Anwendung. Für die Einsatzgrenzen der einzeinen...

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