High Quality PR 260 Electric Motor Protection Relay

Overview

The PR260 motor protection controller comprises the following components: main control module (mandatory), measurement module (mandatory, including connecting cables), switching module (optional), and display module (optional, including connecting cables). It can also accommodate an external high current transformer.

Feature of PR260 motor protection controller

21 protection functions, each capable of protecting shutdown, alarm, or tripping.
11 channels of programmable switching input.
6 programmable relay outputs.
Electric energy measurement with the ability to store the latest 100 event records.
Modular design with a small footprint, allowing for a spliced combination of functional modules and offering a flexible structure, suitable for standard rail installation and adaptable to various scenarios.
Utilizes a dot matrix LCD and highlighted indicator lights to clearly show operating status and data.
Programmable settings enable changes to all input and output functions, current and protection settings, and other parameter functions locally.
Comes with a standard RS-485 communication interface and offers an optional 2-way RS485 communication interface, supporting Modbus-RTU protocol and 2-way Profibus-DP communication mode.
Supports features such as anti-shock power and self-starting after power-on.
The measurement module includes its residual current transformer, eliminating the need for additional wiring.

Application of PR 260 Motor Protection Controller

Motor independent control box or MCC control cabinet.
Applications include water pumps and fans.
Three-phase low-voltage AC motor.
Industrial automation site.

Specifications

The working environment of PR 260 Electric Motor Protection Relay:

Motor-rated voltage:	AC380V / AC660V
Motor-rated current:	0.5-820A
Working temperature:	-10C ~ +55C
Storage temperature:	-25C ~ +70C
Relative humidity:	< 93% RH
Elevation:	not more than 3000 m
Atmospheric conditions:	installation site does not allow the explosive medium, containing gas to corrode metal and damage the insulation and conductive medium.

Measuring the accuracy of PR 260 Electric Motor Protection Relay:

Current:	± 0.5% @ 10% to 200% of Ie
Voltage:	± 0.5% @ 10%~150%Ue
Frequency:	± 0.1% @ 45 ~ 65Hz
Power factor:	± 1.0% @ 0 ~ 1.000
Active Power	± 1.0% @ 0 ~ 500kW
Leakage current:	± 1% @10% to 100% of Ir
Analog Output:	± 1% @4 ~ 20mA

Electrical parameters of PR 260 Electric Motor Protection Relay:

Auxiliary Power:	AC90-240Vac/dc
Power consumption:	<10 VA
Insulation resistance:	> 100MΩ
Relay:	Alarm relay @ 5A / 250VAC, 5A / 30VDC (NO node)

Electrical test of PR 260 Electric Motor Protection Relay:

IEC 61000-4-2	level III
IEC 61000-4-4	level III
IEC 61000-4-5	level III
IEC 61010-1	AC2kV/1min Between power/input/output

Selectable Models

Products code	IEEE / ANSI C37.2	PR201	PR202	PR203	PR240	PR260	PR265	PR26C
PROTECTION FUNCTION
Max. Start Time	48	●	●	●	●	●	–	–
Overload	49, 51	●	●	●	●	●	–	–
Increased safety motors overload	51	–	–	–	●	●	–	–
Over Current – Jam in starting	51R	●	●	●	●	●	–	–
Over Current – Jam in running	51R	–	●	●	●	●	–	–
Phase loss	47	●	●	●	●	●	–	–
Current imbalance	46	●	●	●	●	●	–	–
Over voltage	59	–	●	●	●	●	–	–
Undervoltage	27	–	●	●	●	●	–	–
Under Power	32L	–	●	●	●	●	–	–
Ground fault	50G/N, 51G/N	–	○	○	●	●	–	–
Over Current – Short	50	–	–	–	●	●	–	–
Over temperature	38	–	–	–	○	○	–	–
Abnormal frequency	81U/81O	–	–	–	●	●	–	–
Lead/ Lag PF / Low Power Factor	55	–	–	–	●	●	–	–
Welded Contactor	74	–	–	–	●	●	–	–
External fault	86 or 94	–	–	–	–	●	–	–
Internal failure	3	–	–	–	–	●	–	–
Restart		–	–	–	●	●	–	–