Protection Relays

CPM 310 G

Digital Multifunction Draw-Out Type Current Protection Relay

CPM 310-G is the digital Overcurrent relay that is designed with 50 years of experience in the relay sector and strong cooperation with our clients. It is widely implemented in Smart Grid and Substation Automation System, therefore it provides us easy-to-use advanced solutions of high protection, control and measurement application for the HV and MV system.

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About Device

DEMA proudly presents the users and modern networks a solid alternative for overcurrent protection with CPM 310 G; with the state-of-art electronic, physical and functional technology for use with (X/5) A or (X/1) A conventional type current transformers. As a DSP based digital multi-function protection & control relay with 3 phase & earth overcurrent protection, DEMA CPM 310 G is tested to fulfill international standards requirements; and provides the users numerous assembly, commissioning and service advantages.

Application Areas

MV

HV

Specifications
  • 7 Binary Input, 8 Output

  • RS485 communication, ( MODBUS RTU & IEC60870-5-103) via USB (front port)

  • Full screen R – S – T and N ampermeter display

  • Display of activated protection functions on a single screen

  • Function Test without using Relay Test Set

  • Largest LCD graphics screen in its class (128 px x 64 px)

  • Wide IEC, ANSI and custom curve support;

  • (X/1) A and (X/5) A current transformer compatibility in a single unit

  • Quick alarm menu access and enhanced alarm explanations

  • 8 programmable Virtual LEDs

  • Electro-magnetic compatibility tested for IEC directives

  • Draw-out system that enables under-load unit displacement / replacement

  • IP52 front side and IP20 backside environmental protection

  • RMS Current Measurement,Max Rms Current Meas.,Fundemental Current Meas.

  • P/N Sequences Current Meas.,Frequency, Current, Thermal (θ) Measurements

  • Circuit Breaker Monitoring,Automatic reclosing Meas.,Event Records ,Fault Records

  • Alarm Records,Disturbance Waveform Recording (3x5 s)

  • SCADA ready

  • IP52 and IP20 protection for front and rear panel respectively

ANSI Codes

FUNCTION

ANSI CODE

CPM 310 G

Earth Overcurrent

50/51N

3 thresholds

Phase Overcurrent

50/51P

3 thresholds

Undercurrent Protection

37

1 thresholds

Negative Sequence        Over-current Protection

46

2 thresholds

Thermal Overload Protection

49

2 thresholds

Automatic reclosing

79

4 shot

Breaker Failure Settings

50BF

Broken Conductor Detection

46BC

Cold Load Pickup

CLPU-50/50N

Blocking Relay

68

Trip Circuit Supervision

74TCS

Latching

86

Inrush Current Detection

68

Brochures
Leaflet
English / 21.09.2022 / 1.17 MB / PDF
Technical Brochure
English / 21.09.2022 / 2.74 MB / PDF
Quick Guide
English / 21.09.2022 / 1.21 MB / PDF
User Manual
English / 21.09.2022 / 22.25 MB / PDF
Test Reports
Type Test Report
English / 21.09.2022 / 13 MB / PDF
EMC Test Reports
English / 21.09.2022 / 1.21 MB / PDF
MODBUS Map
English / 21.09.2022 / 1.96 MB / PDF
Digiconnect Relay Management Software v3.10
22/08/2022 00:08:13 / exe
Drivers for Digiconnect v3.10
22/08/2022 00:09:11 / exe