What is the warranty period?

The product comes with a 24-month warranty.

Does it support auto-restart functionality?

Yes, it can be set for up to 9 auto-starts to ensure continuous operation in unattended occasions.

Frequency Converter 50Hz to 60Hz Pump Soft Starter for Water

Name: Frequency Converter 50Hz to 60Hz Pump Soft Starter for Water
Brand: Yueqing Greenwich Imp & Exp Co., Ltd.
SKU: 2071952785

Zhejiang, ChinaYueqing Greenwich Imp & Exp Co., Ltd.

US$100.00-300.00

1 Piece

Product profile

Customization

Available

Application

General Transducer

Output Type

Triple

Model NO.

R1-PR800-7.5KW

Principle of Work

AC to AC Soft Starter

Switch Mode

PAM Control

Main Circuit Type

Voltage

Voltage of Power Supply

Low Voltage Variable-Frequency Drive

Link of Transformation

AC-AC Variable-Frequency Drive

Nature of DC Power

Voltage Variable-Frequency Drive

Function

Protect The Motor

Brand

Gwiec

Output Form

4-20mA DC Analog Output

Phase

Three Phase

Color

Gray

Product Name

Soft Starter

Power

7.5 Kw

Shell Material

All Refractory Material

Certification

Warranty

24 Months

Transport Package

Export Standard Carton Box

Specification

7.5 KW-315 KW

Trademark

Gwiec

Origin

Yueqing

HS Code

8511409900

Production Capacity

5000

Key features

Wide Voltage Compatibility: Supports 220V, 380V, 440V, and 660V input with 50Hz/60Hz frequency conversion.

Five Start Modes: Includes ramp voltage, current limit, snap action, and heavy load shock start options.

Comprehensive Protection: Features over-voltage, under-voltage, over-current, phase loss, and short-circuit protection.

Pump Application Optimization: Reduces hydraulic shocks and mechanical stress while preventing blocked pipe damage.

Advanced Monitoring: Provides real-time display of voltage, current, apparent power, and thermal equilibrium.

Auto Restart Capability: Configurable for up to 9 auto-starts for continuous unmanned operation.

Robust Build Quality: Constructed with all refractory material and rated IP20 protection level.

CE Certified: Meets international safety standards with CE certification for global markets.

Company profile

Yueqing Greenwich Imp & Exp Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2017-07-19Nearest Port: ningboAverage Response Time: ≤15hTerms of Payment: LC, T/T, PayPalInternational Commercial Terms(Incoterms): FOB

AI-Powered supplier vetting

SummaryYueqing Greenwich Imp & Exp Co., Ltd. is identified as a China-based manufacturer/factory and limited company located in Zhejiang, with a factory in the Qiligang/Liushi area. The supplier reports ISO 9001 certification, 10 production lines, 6–10 R&D engineers, and 6–10 quality-control staff. Listed production capacities are 90,000 contactors, 210,000 circuit breakers, 30,000 switches, and 60,000 relays. Its product scope centers on electrical components including MCCBs, MCBs, contactors, relays, starters, and circuit breakers. Export activity reportedly began in 2017, with 41%–50% of sales from exports and exports conducted directly or through agents. The records provide limited evidence on after-sales service, financial credibility, innovation, customization, and customer-case depth. Trade records show one transaction associated with a Kazakhstan buyer in February 2025, but monetary figures are omitted.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory and Limited Company, with its head office and factory located in Zhejiang, China. However, another record describes the company nature as a trading company, indicating a mixed or potentially inconsistent classification across the available data.

CertificationsThe supplier reports holding ISO 9001 certification for its management systems. This is explicit evidence of a documented quality-management certification, although no certification scope, issuing body, or validity dates are provided.

R&D capabilityThe supplier reports 6–10 years of total R&D-engineer experience, and its company description mentions continuous improvement and innovation. These provide some positive indication of development capability, but no specific patents, proprietary products, R&D projects, or new-product examples are supplied.

Production capacityThe supplier reports 10 production lines, 6–10 quality-control staff, and stated annual capacities of 90,000 contactors, 210,000 circuit breakers, 30,000 switches, and 60,000 relays. The same capacity figures appear consistently across two records, and a physical factory location plus ISO 9001 certification are reported, supporting a positive assessment of production capability.

Product Q&A

Q:What voltage and frequency does this soft starter support?

It supports input voltages of 220V, 380V, 440V, and 660V, and operates at both 50Hz and 60Hz frequencies.

Q:What types of motors are suitable for this device?

It is designed for three-phase squirrel cage induction motors where the rated frequency matches the starter.

Q:What protection features are included?

It includes protection against voltage loss, over-current, overheating, phase loss, short circuits, and three-phase unbalance.

Q:How many start modes are available?

There are five modes: Ramp voltage start, Current limit start, Snap action + Ramp voltage, Snap action + Current limit, and Heavy load strong shock start.

Q:Can the device be used for pump stations?

Yes, it reduces hydraulic shocks, minimizes mechanical stress, and features automatic reset for unmanned pump stations.