DOCA0220EN-01

Measurement Parameters

System Type

The setup ENVT (External Neutral Voltage Tap) presence command (command code = 46472) configures the content of the system type register.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0CF1

3314

R-WC

INT16U

30, 31, 40, 41

E/P

System type

Factory setting:

  • 40 with MicroLogic E trip unit

  • 41 with MicroLogic P trip units

Determining system type:

If...

Then...

Result

the system type is a three-pole circuit breaker with external neutral current transformer and without external neutral voltage tap

system type = 30

  • Measurements of the phase-to-phase voltages are available.

  • Measurements of the phase-to-neutral voltages are not available.

  • Measurement of the neutral current is available.

  • 3 wattmeters method is not possible.

the system type is a three-pole circuit breaker without external neutral current transformer and without external neutral voltage tap

system type = 31

  • Measurements of the phase-to-phase voltages are available.

  • Measurements of the phase-to-neutral voltages are not available.

  • Measurement of the neutral current is not available.

  • 3 wattmeters method is not possible.

the system type is a three-pole circuit breaker without external neutral current transformer and with external neutral voltage tap

system type = 40

  • Measurements of the phase-to-phase voltages are available.

  • Measurements of the phase-to-neutral voltages are available.

  • Measurement of the neutral current is not available.

  • 3 wattmeters method is possible.

the system type is a three-pole circuit breaker with external neutral current transformer and external neutral voltage tap, or if the system type is 4-pole circuit breaker

system type = 41

  • Measurements of the phase-to-phase voltages are available.

  • Measurements of the phase-to-neutral voltages are available.

  • Measurement of the neutral current is available.

  • 3 wattmeters method is possible.

This table presents the text to choose on the MicroLogic E trip unit display according to the system type determined previously:

If...

Then...

system type = 31

select 3W3ct

system type = 40

select 4W3ct

system type = 41

select 4W4ct

Power Flow Sign

On MicroLogic P trip units, the power flow sign is configured by using the MicroLogic HMI or the power flow sign configuration command (command code = 47240).

On MicroLogic E trip units, the power flow sign is configured by using the MicroLogic HMI only.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0CF3

3316

R-WC

INT16U

0–1

E/P

Power flow sign:

0 = the active power flows from upstream (top) to downstream (bottom) (factory setting).

1 = the active power flows from downstream (bottom) to upstream (top).

Reactive Power Sign

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0CF4

3317

RW

INT16U

0–1

E/P

Sign convention for the reactive power:

0 = alternate IEEE convention

1 = IEEE and IEC convention (factory setting) (1)

(1) With MicroLogic E trip unit, only IEC convention.

Power Factor Sign

The power factor sign configuration command (command code = 47241) configures the content of the power factor sign register.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0CF5

3318

R-WC

INT16U

0–2

E/P

Sign convention for the power factor and the fundamental power factor (cosϕ):

0 = IEC convention

1 = alternate IEEE convention

2 = IEEE convention (factory setting) (1)

(1) With MicroLogic E trip unit, only IEC convention.

Energy Accumulation Mode

The energy accumulation mode configuration command (command code = 47242) configures the content of the energy accumulation mode register.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0CFB

3324

R-WC

INT16U

0–1

E/P

Energy accumulation mode:

0 = absolute accumulation (factory setting) (1)

Ep = EpIn + EpOut

Eq = EqIn + EqOut

1 = signed accumulation

Ep = EpIn – EpOut

Eq = EqIn – EqOut

(1) With MicroLogic E trip unit, only absolute computation is available.

Demand Time

The current demand configuration command (command code 47243) configures the content of registers 3351 and 3352.

The power demand configuration command (command code 47244) configures the content of registers 3354 and 3355.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x0D16

3351

RW

INT16U

0–1

E/P

Current demand calculation method (window type):

0 = block interval, sliding

1 = thermal, sliding (factory setting) (1)

0x0D17

3352

R-WC

x1

min

INT16U

5–60

E/P

Duration of the current demand calculation window, adjustable in steps of 1 minute.

The factory setting is 15 minutes (2).

0x0D19

3354

R-WC

INT16U

0–5

E/P

Power demand calculation method (window type):

0 = sliding (block interval) (factory setting)

1 = sliding (thermal) (1)

2 = block (block interval)

5 = synchronized to communication

0x0D1A

3355

R-WC

x1

min

INT16U

5–60

E/P

Duration of the power demand calculation window, adjustable in steps of 1 minute.

The factory setting is 15 minutes.

(1) With MicroLogic E trip unit, only the thermal sliding option is available.

(2) The duration in minutes of the current demand calculation window set in this register is used for the maximum current I1, I2, and I3 and IN protection functions. When these protection functions are active, it is possible to modify the duration of the calculation window whether the protective cover for the dial settings is closed or not, whether remote access is authorized (MicroLogic) or not, and whether the supervisor knows the remote access control word or not.

Nominal Voltage

The setup nominal primary voltage Vn display command (command code = 47245) configures the content of the nominal voltage register.

Address

Register

RW

X

Unit

Type

Range

A/E/P

Description

0x258F

9616

R-WC

1

V

INT16U

100–1150

E/P

Nominal primary voltage Vn on the voltage transformer.

Factory setting = 690 V

0x2590

9617

RW

1

V

INT16U

100–690

P

Nominal secondary voltage on the voltage transformer.

Factory setting = 690 V

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