General Specifications & Advantages - DEMA CPM 310 G User Manual

General Specifications & Advantages
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
& 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.
DEMA CPM 310 G Digital Overcurrent Protection Relays are type tested in internationally accredited
laboratories to comply with IEC 60255, IEC 60529, IEC 60695 and IEC 60068 standards, and have
been introduced into service under the guarantee of ISO9001:2008.
The general specifications of CPM 310 G are listed below to create a common sense for the product.
All functions CPM 310 G offers will be examined thoroughly throughout this manual.
Function
Phase Overcurrent – Instantaneous Trip
Phase Overcurrent – Delayed Trip
Earth Overcurrent – Instantaneous Trip
Earth Overcurrent – Delayed Trip
Restricted Earth Fault Protection
Thermal Overload Protection
Undercurrent Protection
Negative Sequence Overcurrent Protection
Latching
Circuit Breaker Failure Detection
Auto-reclosing
Broken Conductor Detection
Temperature / Buchholz Protection
Cold Load Pickup Function
Settings Groups
Trip Circuit Supervision
Circuit Breaker Supervision and Control
Blocking Logic Selectivity
Delaying Logic Selectivity
On Screen CB ON / OFF commanding
Optic-coupled Inputs
Outputs (Total / SPDT / SPST)
Disturbance Waveform Recording
Event and Fault Records
Communication Ports
(X/1) A & (X/5) A CT compatibility
Frequency and Current Measurements
Thermal Image Measurements
Positive and Negative Sequence Current Measurements
Auto-recloser Measurements
Watchdog
Self-Function-Testing
1
DSP: Digital Signal Processor.
1 based digital multi-function protection
ANSI Code
50
51
50N
51N
64N
49
37
46
86
50BF
79
46 BC
26 / 63
TCS
- 12 -
CPM 310 G
3 thresholds
3 thresholds
3 thresholds
3 thresholds
3 thresholds
2 thresholds
1 threshold
2 thresholds
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4-shot
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2 groups
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7
8 / 4 / 4
5 x 3 s
150 records
USB + RS485
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