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Technical Characteristics
Delaying Sel.1
Used for increasing trip delays for the selected protection functions while the
protection group is set to "1".
Start Wave Record
Used for triggering a 3 second record of the current waveform.
Cold Load Pickup
Used for increasing the threshold settings of the selected protection function for a
given time.
Spring Failure
Supervises the CB charging spring via auxiliary contacts.
Change Set.Group
Used for altering between protection settings groups 1 and 2.
Block ARCL
Used for disabling auto-reclose cycles.
Reset %Θ
Used for resetting the thermal image.
Trip Circuit Sup.
Supervises the trip circuit of circuit breaker.
Reset RL1-RL6
Resets all programmable outputs.
Reset LED
Used for resetting programmable LEDs and alarm records.
Pressure Trip
Evaluates the pressure trip auxiliary contact information.
Buchholz Alarm
Evaluates the Buchholz alarm auxiliary contact information.
Buchholz Trip
Evaluates the Buchholz trip auxiliary contact information.
Temp.Alarm
Evaluates the thermometer alarm auxiliary contact information.
Temp.Trip
Evaluates the thermometer trip auxiliary contact information.
Blocking Sel.2
Used for blocking selected protection functions while the protection group is set to
"2".
Delaying Sel.2
Used for increasing trip delays for the selected protection functions while the
protection group is set to "2".
Connection Cable
2-wire screened communications cable.
Connection Point
4 terminals at the rear side of the device: reference, sending, receiving and
termination resistance terminals.
Communications Protocols
DEMCOM (DEMA communications protocol), MODBUS and IEC60870-5-103.
Communications Speed
min. 1,200 baud, max. 38,400 baud.
Insulation Level
2000 V / 1 min.
Connection Type
Between CPM 310 G and PC.
Connection Usage
USB serial port is used for establishing communications between CPM 310 G and a
PC for using DEMA DigiConnect software.
Connection Point
On the front side of the relay, USB B-type connector under the cover.
Communications Protocols
DEMCOM (DEMA communications protocol) and MODBUS.
Communications Speed
min. 1,200 baud, max. 38,400 baud.
S1, S2, S3, S4, S5 Buttons
Multifunctional buttons, functioning as described on the screen for each menu.
Reset Button
Reset button has cyclic duty over LED, Alarm and Ampermeter menus. While at
any menu; first hit heads to the "Programmable LEDs" menu, second hit heads to
the "Alarm Menu" if any alarms are available, or to the "Ampermeters" menu if
there are no alarms to display. Hitting further returns to the initial menu. The reset
button is reachable either the cover is closed or open.
1.7 Command Interface Buttons
1.6 USB Serial Communications Port
1.5 RS485 Serial Communications Port
Programmable Input Setting Options (Continued)
Summary of Contents for CPM 310 G
Page 1: ...CPM 310 G Digital Overcurrent Protection Relay User Application Manual vEN 2016 03...
Page 2: ...2...
Page 6: ...6 ABOUT DEMA...
Page 11: ...11 INTRODUCTION...
Page 32: ...32 PACKING LABELING INFORMATION...
Page 34: ...34 OPERATING MANUAL...
Page 53: ...53 RELAY MENUS MANUAL...
Page 55: ...55 The Menu Tree...
Page 56: ...56...
Page 57: ...57...
Page 58: ...58...
Page 59: ...59...
Page 60: ...60...
Page 61: ...61...
Page 128: ...128 DIGICONNECT PC PROGRAM MANUAL...
Page 189: ...189 APPLICATION DIAGRAMS...
Page 191: ...191 Sample Power Transformer Protection Application Diagram...
Page 193: ...193 FUNDAMENTAL CABLING DIAGRAM...
Page 203: ...203 APPLICATION DIAGRAM NO 10 RS485 Cabling...
Page 204: ...204 TECHNICAL DATA...
Page 220: ...220 GLOSSARY...