Schneider voltage protector can replace EVRPD-110NZ6 (Z5)

EVRPD-44U can seamlessly replace EVRPD-110NZ5M and EVRPD-110NZ6M simultaneouslyBoth are old Schneider EOCR series voltage protectors, which have been gradually discontinued. EVRPD-44U is the designated unified upgrade model.Schneider voltage protector can replace EVRPD-110NZ6 (Z5)

1、 Alternative Relationship and Core Positioning

EVRPD-110NZ5M (50Hz dedicated) and EVRPD-110NZ6M (60Hz dedicated) are two old models of the same series, with the same voltage level (110V) and only different frequency adaptation. The EVRPD-44U adopts a wide frequency design (40-70Hz) and is compatible with both 50Hz and 60Hz power grids,Replace two products directly without distinguishing frequenciesThe core protection logic, installation dimensions, and wiring terminals of the two old models are consistent with EVRPD-44U, achievingNo modification or replacementNo need to modify the circuit, control program, or installation method.

2、 Core functions and protection scope

The basic protection functions of the three products are the same and all haveOvervoltage, undervoltage, phase loss, reverse phase, three-phase imbalanceThe five core protections have the same protection action principle and output logic, and can be directly compatible with the original control system. The EVRPD-44U has been fully upgraded in terms of functionality: equipped with 7-segment LED digital display, which can view three-phase voltage, frequency, harmonics, and fault codes in real time; Support storage of the last 3 fault records for quick problem identification; The automatic reset time range is extended to 0.5 seconds to 20 minutes, suitable for more operation and maintenance scenarios.

3、 Voltage and frequency compatibility

• EVRPD‑110NZ5MRated voltage 110V AC, only suitable for 50Hz power grid, with a narrow voltage adaptation range.

• EVRPD‑110NZ6MRated voltage 110V AC, only suitable for 60Hz power grid, with a narrow voltage adaptation range.

• EVRPD-44U: AdoptingWide voltage+wide frequencyDesign and measure voltage range of 100-480V AC, control power supply compatible with AC/DC 100-240V, frequency coverage of 40-70Hz, can simultaneously cover 110V 50Hz/60Hz systems, and can also adapt to various power grid environments such as 220V, 380V, 440V, etc., with stronger compatibility and resistance to voltage fluctuations.

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4、 Installation and wiring

All three support 35mm DIN rail installation and panel embedded installation, with consistent external dimensions and terminal layout. The wiring sequence is the same, and the output is one set of SPDT contacts with the same contact capacity (AC15 2A/240V). After replacement, there is no need to adjust the secondary circuit and intermediate relay.

5、 Parameter Setting and Operation

• 老款 （NZ5M/NZ6M）No numerical display, parameter adjustment and troubleshooting are not intuitive enough, and need to be adapted to 50Hz/60Hz frequencies separately.

• EVRPD-44UEquipped with a digital display panel and knob operation, the parameter settings are more precise. The protection threshold of the original and old models can be quickly matched through the menu (such as overvoltage 110% -115%, undervoltage 80% -85%, imbalance rate 10% -15%), and the 50Hz/60Hz frequency can be switched with one click, greatly improving debugging efficiency.

  Schneider voltage protector can replace EVRPD-110NZ6 (Z5)
  

VI. Summary

EVRPD-44U is a combination of EVRPD-110NZ5M and EVRPD-110NZ6MUnified seamless alternative solutionIt has full coverage of functions, universal wiring and installation, and comprehensive upgrades in display, voltage/frequency adaptation, intelligent diagnosis, and other aspects. When replacing, follow the original wiring sequence, match the original protection parameters, and set the corresponding frequency. This is a choice for discontinued old models or equipment upgrades.

EOCR, also known as Electronic Over Current Relay, is an intelligent motor comprehensive protector under Schneider Electric (formerly Sanhe, South Korea). It is used to comprehensively protect three-phase/single-phase motors from overload, phase loss, locked rotor, grounding and other faults and damages. The brand was originally owned by SAMWHA in South Korea and was acquired by Schneider Electric in 2001. It is now Schneider's core motor protection product.

Tangshan Hanya Electrical Equipment Co., Ltd. is the core agent of Schneider EOCR (formerly known as Sanhe) motor protector marketing service center in China. Responsible for the sales and technical services of products in the national market, we are a professional service provider for the national market. The company specializes in Schneider EOCR's full range of motor protection products, covering motor protection functions such as overload, phase loss, locked rotor, three-phase imbalance, undercurrent, grounding, and reverse rotation. They are widely used in industries such as metallurgy, power, petroleum, chemical, cement, coal, and machinery manufacturing.

We provide original factory guarantees, professional selection and configuration, on-site debugging guidance, fault solutions, and after-sales support to customers across the country. With stable and reliable product quality, sufficient stock supply, and fast response services, we help customers ensure the safe operation of motor systems, reduce equipment failures, and improve operation and maintenance efficiency. We are a long-term partner in the field of industrial motor protection.