Booster-set range

Summary

Product Identification

ESPA CKE inverter booster sets are designed as automatic booster sets for water supply. These variable speed booster sets integrate ESPA ESD Speedrive (Variable Frequency Driver) technology.

Specific models mentioned include:

• CKE1M Multi VS (Single-phase, single pump)
• CKE1 Multi VS (Three-phase, single pump)
• CKE2M Multi VS (Single-phase, twin pumps)
• CKE2 Multi VS (Three-phase, twin pumps)
• CKE3M Multi VS (Single-phase, three pumps)
• CKE3 Multi VS (Three-phase, three pumps)
• CKE4 Multi VS (Three-phase, four pumps)

The ESPA Speedrive (ESD) variable-frequency drivers are designed for integration with ESPA pumps such as MULTI-ESD, PRISMA-ESD, and XVM-ESD. Speedrive modules include M2, T3, and T4.

Applications

ESPA CKE inverter booster sets provide an efficient solution for water boosting where existing supplies are unreliable or insufficient to meet building or application demands. They are suitable for:

• Automatic water supply for household, building services, hotels, agricultural, hospitals, and industrial processes.
• Maintaining constant pressure regardless of water flow requirements.
• Customized solutions for increased flow, heat, or altered operation mode.
• Constant flow systems, such as golf course irrigation (programmable with ESD).
• Firefighting booster sets (designed, manufactured, and tested to standards like BS 12845:2015), which can include duty, standby, and jockey pumps driven by electrical motors or diesel engines. (Refer to specific firefighting catalogue for details).

Operation Principle

These are fully automatic variable speed booster sets. The complete unit is controlled by an ESPA ESD Speedrive (Variable Frequency Driver) to ensure water supply at constant pressure.

The booster set adapts the motor speed to the water demand, maintaining the requested pressure at any flow demand. A pressure transducer on the discharge manifold provides real-time pressure information to the ESPA Speedrive, which then regulates pump speed. This process saves energy by adapting power consumption to the actual water demand.

Variable-speed technology offers:

• Improved efficiency.
• High-quality, oscillation-free service.
• Greater durability of equipment and installation.
• Elimination of fluctuations in water flow.
• Replacement of large accumulation tanks with a small expansion vessel.

Features

• Stainless steel suction and discharge manifolds AISI 304.
• Chassis finished in black epoxy coating.
• WRAS approved nickel plated brass ball valves on each pump for individual isolation.
• WRAS check valves on each pump.
• Anti-vibration mounts as standard.
• 8-, 12-, or 24-liter WRAS Approved expansion vessel, depending on pump size.
• Control panel with MCB’s.
• FVC (Free volt contacts) for external alarm control.
• Full documentation provided with each booster set.

Control System

The ESPA ESD Speedrive (Variable Frequency Driver) offers:

• Energy Savings: Up to 50% compared to fixed-speed systems.
• Operation: Silent running, compact design, extends pump life cycle.
• Display & Interface: Backlit display and a 5-button keypad for user parameters. Installer-friendly for regulating and modifying basic operational parameters. Includes a reset option for factory defaults.

Adjustable Operating Parameters:

• Language: ES, EN, DE, IT, FR.
• Operation: AUTOMATIC – MANUAL.
• Set pressure: set point.
• Differential pressure: hysteresis or difference in set pressure that marks pump start-up.
• Maximum motor intensity: for motor protection.
• Pump sleep frequency: manually or automatically set. ESD automatically calculates sleep frequency based on installation characteristics and set pressure.
• Nominal motor frequency: 50 Hz/60 Hz.
• Motor rotation reversal.
• ON–OFF auxiliary pump: auxiliary pump in fixed-speed DOL operation.
• Auxiliary pump in variable speed mode by ESD.
• Activation frequency of auxiliary pumps.
• Auxiliary pump maximum intensity.

Displayed Parameters:

• Set pressure.
• Differential pressure.
• Maximum motor intensity.
• Stoppage frequency.
• Pump stop temporisation.
• Module temperature.
• Alarm display: power surge, short-circuit, power failure, module temperature.
• Operational register: number of start-ups, hours in operation, hours online.
• Access to advanced parameter settings, operational register deletion, and alarm history is password protected.

Booster Set Configurations with ESD Control:

• Units with one single ESD module:
  • CKED 2 pumps: variable-speed main pump + fixed-speed DOL auxiliary pump.
  • CKED 3 pumps: variable-speed main pump + 2 fixed-speed randomly alternating DOL auxiliary pumps.
  • CKED 4 pumps: variable-speed main pump + 3 fixed-speed randomly alternating DOL auxiliary pumps.
• Units with multiple ESD modules (up to 4):
  • CKE2: 2 pumps: variable-speed main pump + variable-speed auxiliary pump, both operating in cyclical duty changeover.
  • CKE3: 3 pumps: variable-speed main pump + 2 variable-speed auxiliary pumps, all 3 operating in cyclical duty changeover.
  • CKE4: 3 pumps: variable-speed main pump + 2 variable-speed auxiliary pumps, all 3 operating in cyclical duty changeover.
  • All regulated pumps operate in synchronisation at the same frequency once auxiliary pumps are active. Random alternation between pumps at each system start-up.

ESPA Control Panel (for other package booster sets):

• Steel enclosed panel with IP 54 protection.
• Incorporates one or more Danfoss inverters (depending on control choice).
• Door interlocked isolator.
• Pump controller via transducer.
• Manual/Off/Auto parameter for each pump.
• Duty pump alternation by software control (time of day/week or hours run).
• "Filling system" program on power resumption to eliminate hydraulic shock.
• Can control up to six frequency-controlled pumps directly via inverter "data bus".
• Two jockey pumps can be controlled in variable speed or fixed speed operation.
• "Standard anti-cavitation programme" for large multi-pump sets.
• Auxiliary input for low water via probe in suction manifold.
• Volt-free contacts for BMS output.
• Password protection.

Operating Limits

• IP 55 protection (for ESD modules).
• Maximum ambient temperature: 40 °C.

Electrical

Speedrive M2 (Single-phase):

• Power source voltage: 1~230 V AC ± 10 %.
• Motor voltage: 3~230 V AC.
• Maximum intensity: 7 A.
• Auxiliary relay: 1 for external alarm.
• Free power contact (for M2): 1, maximum intensity 2 A, 1~230 V AC.

Speedrive T3 (Three-phase):

• Power source voltage: 3~400 V AC ± 10 %.
• Motor voltage: 3~400 V AC.
• Maximum intensity: 9 A.
• Auxiliary relay: No.

Speedrive T4 (Three-phase):

• Power source voltage: 3~400 V AC ± 10 %.
• Motor voltage: 3~400 V AC.
• Maximum intensity: 13 A.
• Auxiliary relay: No.

Common Electrical Specifications (M2, T3, T4):

• Cooling: Air-cooled.
• Digital input for 4-20 mA transducer with 24-V DC power source.
• Additional digital input: 1.
• Additional analogical input: 1.
• Level switch terminal: Yes (or free volt contact to switch circuit on/off).
• PTC: Optional.
• External communication port: RS 485 (communication between ESD modules up to 4 ESDs).
• Screen: Backlit.
• Minimum working frequency: Adjustable.
• Acceleration ramp: 1 fixed.
• Deceleration ramp: 1 fixed.
• Stop temporisation: Yes.

Mechanical / Hydraulic

Speedrive Modules Dimensions and Weights:

• M2: 128 mm (A), 71 mm (B), 207 mm (C), 207 mm (D), 2.2 kg.
• T3: 142 mm (A), 85 mm (B), 207 mm (C), 207 mm (D), 2.5 kg.
• T4: 142 mm (A), 85 mm (B), 207 mm (C), 207 mm (D), 2.5 kg.

Booster Set Configurations (CKE1, CKE2, CKE3, CKE4 Multi VS): The extracted text includes extensive tables detailing pump models, P2 [kW] ratings, inverter types, number of pumps, valve diameters (suction/discharge), manifold diameters (suction/discharge), and overall dimensions (A, B, C in mm) and weights (kg) for various single-phase and three-phase configurations.

• CKE1 Multi VS (Single Pump): P2 ranges from 0.75 kW to 5.5 kW. Suction/discharge valve diameters range from 1" to 2 1/2". Manifold diameters range from 2" to 4". Weights range from 42 kg to 157 kg.
• CKE2 Multi VS (Twin Pumps): P2 ranges from 0.75 kW to 5.5 kW. Suction/discharge valve diameters range from 1" to 2 1/2". Manifold diameters range from 2" to 4". Weights range from 69 kg to 262 kg.
• CKE3 Multi VS (Three Pumps): P2 ranges from 0.75 kW to 5.5 kW. Suction/discharge valve diameters range from 1" to 2 1/2". Manifold diameters range from 2 1/2" to 4". Weights range from 150 kg to 570 kg.
• CKE4 Multi VS (Four Pumps): P2 ranges from 0.75 kW to 5.5 kW. Suction/discharge valve diameters range from 1" to 2 1/2". Manifold diameters range from 4" to 6". Weights range from 210 kg to 798 kg.

See the official PDF for exact tabulated values for specific models, dimensions, and weights.

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Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the latest revisions present in the complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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