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3�4�3�- SINGLE-PHASE NETWORK MEASUREMENT�

MDC-4

CPU
OUT 4

OUT 3
OUT 2
OUT 1

Power

Supply

V

L1

L1

N

S1

S2

P1 P2

N

LOAD

OUT 1

OUT 2

OUT 3

OUT 4

Figure 4: Single-phase network measurement�

The MC1 transformer secondary value is set to 0.250 A.

11

Instruction Manual

MDC-4

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Summary of Contents for MDC-4

Page 1: ...INSTRUCTION MANUAL M013B01 03 21A Maximum demand control MDC 4...

Page 2: ...2 MDC 4 Instruction Manual...

Page 3: ...he following should be taken into consideration Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the unit In particular handling with voltages appl...

Page 4: ...CREENS 16 4 7 OUTPUT RELAYS 17 4 8 PROGRAMMING 17 4 8 1 CURRENT PRIMARY 17 4 8 2 SELECTING THE MAXIMUM DEMAND VARIABLE 18 4 8 3 PERIOD OF MAXIMUM DEMAND INTEGRATION 18 4 8 4 CONTRACTED POWER 18 4 8 5...

Page 5: ...7 04 15 M013B01 03 15B Changes in the following sections 4 2 4 6 1 4 6 2 4 8 06 15 M013B01 03 15C Changes in the following sections 4 8 5 02 16 M013B01 03 16A Changes in the following sections 4 2 4 8...

Page 6: ...ervice 2 PRODUCT DESCRIPTION The MDC 4 unit controls maximum power demand both in single and three phase installations with and without neutral The unit is equipped with a power analyzer that measures...

Page 7: ...s or accessories or those made by other manufacturers If an anomaly or malfunction is detected in the unit do not use it to take any measurements Inspect the work area before taking any measurements D...

Page 8: ...iary Power Supply 6 N Voltage input neutral 18 Auxiliary Power Supply 8 Relay output 4 NC 21 COM Common current inputs 9 Relay output 4 C 22 S1 Current input L3 10 Relay output 4 NO 23 S1 Current inpu...

Page 9: ...4 OUT 3 OUT 2 OUT 1 Power Supply VL1 L1 L2 L3 3P1 2P1 1P1 3P2 2P2 1P2 N VL2 VL3 N LOAD Brown Green Grey Pink Green White Red Blue OUT 1 OUT 2 OUT 3 OUT 4 Figure 2 Three phase network measurement with...

Page 10: ...2 OUT 1 Power Supply VL1 L1 L2 L3 3P1 2P1 1P1 3P2 2P2 1P2 VL2 VL3 LOAD Brown Green Grey Pink Green White Red cBlue OUT 1 OUT 2 OUT 3 OUT 4 Figure 3 Three phase network measurement with a 3 wire conne...

Page 11: ...UREMENT MDC 4 CPU OUT 4 OUT 3 OUT 2 OUT 1 Power Supply VL1 L1 N S1 S2 P1 P2 N LOAD OUT 1 OUT 2 OUT 3 OUT 4 Figure 4 Single phase network measurement The MC1 transformer secondary value is set to 0 250...

Page 12: ...nect the loads in accordance with the maximum demand value measured The load control by level ensures that the user does not exceed the contracted power which generally implies having to pay high pena...

Page 13: ...its Phases L1 L2 L3 Total III Phase neutral voltage V Phase phase voltage V Current A Active power W Reactive power var Apparent power VA Cos Active Energy kW h Current Date and Time Maximum demand pa...

Page 14: ...5 Function of keys Key Keystroke Moves an editable digit Go to programming screen Increases the digits 0 9 or rotates between the different options 4 4 DISPLAY The unit has a display of two lines eac...

Page 15: ...r VA or mA Pd Instantaneous calculated maximum demand W or VA or mA o1 o4 Status of the output relays 0 Load connected 1 Load disconnected d max Holding down the key 2 seconds Pd max Maximum demand ma...

Page 16: ...rrent L1 A A2 Current L2 A A3 Current L3 A W1 W2 W3 18868 18893 18912 W1 Active power L1 W W2 Active power L2 W W3 Active power L3 W va 1 va 2 va 3 25 81 207 VAr1 Reactive power L1 Var VAr2 Reactive p...

Page 17: ...mmed If the unit is RESET before programming all parameters or no key is pressed for 60 seconds the configu ration will not be stored in the memory and relays return to its resting state for a short t...

Page 18: ...odify the remaining values Maximum value 60 minutes Minimum value 1 minute Press the key to access the next programming step 4 8 4 CONTRACTED POWER Set W v m _05000 In this step the contracted power f...

Page 19: ...value of contracted power from which the output relay is disconnected Example If OUT1 is programmed to 75 when the maximum demand value reaches 75 of the contracted power in the installation output re...

Page 20: ...ess key to access the next programming step 4 8 11 DELAY IN DISCONNECTING OUTPUT RELAY NO 1 out1 Delay OFF s 05 In this step the delay in disconnecting the output relay is programmed Press the button...

Page 21: ...time hold the and key for 2 sec onds the main programming screen will be displayed SETUP DATE Press the key to enter the first programming step 4 9 1 DAY SET DAY _8 In this step the day of the month...

Page 22: ...git that is currently flashing When the desired value is shown on the screen move onto the next digit by pressing the key to modify the remaining values Press key to access the next programming step 4...

Page 23: ...300 V Measurement accuracy Accuracy in voltage measurement 0 5 Accuracy in current measurement 0 5 Accuracy in power measurement 1 Relay outputs Quantity 4 Maximum voltage open contacts 250 Maximum cu...

Page 24: ...adio frequency electromagnetic field immunity test UNE EN 61000 4 4 2013 Electromagnetic compatibility EMC Part 4 4 Testing and measurement techniques Electrical fast transient burst immunity test UNE...

Page 25: ...e improper installation or improper usage of the unit Consequently this guarantee does not apply to failures occurring in the following cases Overvoltages and or electrical disturbances in the supply...

Page 26: ...8 CE CERTIFICATE 26 MDC 4 Instruction Manual...

Page 27: ...27 Instruction Manual MDC 4...

Page 28: ...CIRCUTOR SA Vial Sant Jordi s n 08232 Viladecavalls Barcelona Tel 34 93 745 29 00 Fax 34 93 745 29 14 www circutor es central circutor com...

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