Simpson Electric G100, G200, G300, G400 Operation Manual

GIMA

Multi-Function

Electricity Meter

OPERATOR’S MANUAL

Technical Assistance

Simpson Electric Company offers assistance Monday through Friday,
8:00am to 4:30pm Central Time. To receive assistance contact Technical
Support at [phone] or contact us through our web site at www.
simpsonelectric.com.

Warranty and Returns

Simpson Electric Company warrants each instrument and other articles
manufactured by it to be free from defects in material and workmanship
under normal use and service, it’s obligation under this warranty being
limited to making good at its factory said instrument or other article of
equipment which shall within one (1) year after delivery of such instrument
or other article of equipment to the original purchaser be returned intact to
it, or to one of its authorized service centers, with transportation charges
prepaid, and which its examination shall disclose to its satisfaction to
have been thus defective; this warranty being expressly in lieu of all other
warranties expressed or implied and of all other obligations or liability on its
part, and Simpson Electric Company neither assumes nor authorizes any
other persons to assume for it any other liability in connection with the sales
of its products.

This warranty shall not apply to any instrument or other article of equipment
which shall have been repaired or altered outside the Simpson Electric
Company factory or authorized service centers, nor which has been subject
to misuse, negligence or accident, incorrect wiring by others, or installation
or use no in accord with instructions furnished by the manufacturer.

This instrument is designed to prevent accidental shock to
the operator when properly used. However, no engineering
design can render safe an instrument which is used
carelessly. Therefore, this manual must be read carefully
and completely before making any measurements. Failure
to follow directions can result in a serious or fatal accident.

2

Table Of Contents

1. SAFETY ........................................................................................ 4

1.1 W

1.2 M

2. METER OPERATION...................................................................... 5

2.1 M

2.2 P

2.3 D

3. DISPLAY PAGES ............................................................................ 8

3.1 P

3.2 C

3.3 V

3.4 P

3.5 R

3.6 S

3.7 M

3.8 D

3.9 I

ARNING SYMBOLS ............................................................................. 4

AINTENANCE ..................................................................................... 4

EASUREMENTS .................................................................................. 5

2.1.1 Balance Current Measurements ........................................... 5

2.1.2 Time Averaged Amps/Volts (T-Avg) ..................................... 6

2.1.3 Maximum Demand Power (MD)............................................ 6

OWER UP ........................................................................................ 7

ISPLAY PAGES ................................................................................... 7

OWER UP ........................................................................................ 8

URRENT MENU ...............................................................................8-9

OLTAGE MENU .............................................................................10-11

OWER MENU (METER TYPES 1-4) ..................................................11-14

ESET OF ENERGY REGISTERS ............................................................ 16

CROLLING MENU (METER TYPES 1-4) ................................................. 16

ETER TYPE DISPLAY MENUS .........................................................17-18

ISPLAY SCALING .............................................................................. 19

3.8.1 Voltage Scaling ................................................................... 19

3.8.2 Current Scaling ................................................................... 19

3.8.3 Power Scaling (W, VA, var)................................................. 19

3.8.4 Energy Registers (Wh, VAh, varh) ...................................... 19

3.8.5 Miscellaneous ..................................................................... 19

SOLATED PULSE OUTPUTS .................................................................. 20

4. INSTALLATION ............................................................................ 21

4.1 P

4.2 CT C

4.3 V

4.4 A

4.5 C

ANEL MOUNTING .............................................................................. 21

ONNECTIONS ............................................................................. 22

OLTAGE CONNECTIONS ...................................................................... 22

UXILIARY MAINS SUPPLY (L & N) ....................................................... 22

ONNECTION SCHEMATICS.............................................................. 23-25

5. METER SETUP ........................................................................ 26-28

5.1 P

ROGRAMMING MENU ......................................................................... 28

6. OPTIONS ...................................................................................... 28

6.1 I

NTERNAL MODBUS COMMUNICATIONS ................................................... 28

7. SPECIFICATION ......................................................................29-30

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1. Safety

1.1 Warning Symbols

This manual provides details of safe installation and operation
of the meter. Safety may be impaired if the instructions are not
followed. Labels on individual meters give details of equipment
ratings for safe operation. Take time to examine all labels on the
meter and to read this manual before commencing installation.

CAUTION WARNING

Refer to Operating Manual Danger Risk of Electric Shock

Figure 1-1 Safety Symbols

WARNING

The meter contains no user serviceable parts. Installation and

commissioning should be carried out by qualifi ed personnel

1.2 Maintenance

The equipment should be maintained in good working order.
Damage to the product should be repaired by the manufacturer.
The meter may be cleaned by wiping lightly with a soft cloth. No
solvents or cleaning agents should be used. All inputs and supplies
must be isolated before cleaning any part of the equipment.

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2. Meter Operation

2.1 Measurements

The GIMA makes use of a high speed micro-processor and an
Analogue to Digital converter to monitor input signals from three
independent phases. Each phase voltage, current and power (kW)
are measured directly and a number of other parameters derived
from these in software. The measurement process is continuous
with all six signals scanned simultaneously at high speed. Unlike
many other sampling systems, which sample one phase after
another, this ensures that all input cycles are detected. Distorted
input waveforms, with harmonics to the 30th are therefore detected
accurately.

Derived parameters are calculated and displayed once a second,
scaled by user programmed constants for current and voltage
transformers.

Instantaneous power parameters are integrated over long time
periods providing a number of energy registers. System frequency
is detected by digital processing of the phase 1 voltage signal.

2.1.1 Balance Current Measurements

The rms. value of the instantaneous sum of the three phase
currents is available on some GIMA meter types. The total current

in a three phase system may be represented as :

I

I

LEAK

I

n

Note: In 3 phase 3 wire systems the GIMA must be wired using
3 current transformers as shown in fi g. 4-3 for balance current
measurement to be made.

represents any current leaving the system (e.g. Leakage to earth)

represents current in the neutral (4 wire systems only)

= I1 + I2 + I3= I

bal

LEAK

+ I

n

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2.1.2 Time Averaged Amps/Volts (T-Avg)

Average values of volts and Amps are calculated over a user
programmable time period (10 - 2500 seconds). The displays show
the averages for the most recent time period ending at the time
the display was last updated. The average period is continuously
updated as time progresses.

The largest value of each T-Avg parameter is recorded, saved to
non-volatile memory and displayed as Pk hold T-Avg. These peak
values may be reset by the user.

Each Average-Period is split into 10 sub-periods. The average
values of volts and amps are measured during each sub-period and
stored in an array. The latest sub-period values replace the oldest
in the array as time progresses. The T-Avg values are calculated
as the mean of each corresponding array. The display is updated
with the latest T-Avg parameters at the end of each sub-period
(ever y Average-Period/10 seconds).

2.1.3 Maximum Demand Power (MD)

Average values of kW, kVA and kvar (if fi tted) are calculated over
a user programmable time period (1 - 60 minutes). The displays
show the averages for the most recent time period ending at
the time the display was last updated. The demand period is
continuously updated as time progresses. These parameters are
referred to as Maximum Demand Powers.

The largest value of each MD parameter is recorded, saved to non­volatile memory and displayed as Pk hold MD. These peak values
may be reset by the user.

Each MD-Period is split into 30 sub-periods. The average power
values are measured during each sub-period and stored in an
array. The latest sub-period values replace the oldest in the array
as time progresses. The MD powers are calculated as the mean
of each corresponding array. The display is updated with the latest
MD values at the end of each sub-period (every MD-Period/30
seconds).

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2.2 Power Up

On power up the GIMA shows the meter type and software issue. The
example below shows a GIMA 300 with software issue 1.10.

CUBE

T - 4

SOFT 1.10

2.3 Display Pages

To select current measurements press the AMP key repeatedly
until the desired page is displayed. The number of pages available
is dependant on meter type.

To select voltage measurements press the
until the desired page is displayed. The number of pages available
is dependant on meter type.

To select power/energy measurements press the
repeatedly until the desired page is displayed. The number of
pages available is dependant on meter type.

Automatically scrolling pages showing PF, Volts & Amps on each
phase are obtained by pressing SCROLL
Display pages available on the full range of GIMA meters are
shown below followed by tables showing those available on each
standard meter type.

VOLT key repeatedly

POWER key

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3. Display Pages

Measured data is displayed on the LCD updated every second
unless otherwise stated. Display Pages are organized in four
Standard Menus as follows:

3.1 Power Up

The following screen is shown when auxiliary power is fi rst
supplied.

3.2 Current Menu

Press the AMP key to select from the available Current Menu
pages.

Phase Amps

All Meter Types

Phase 1 true rms amps

Phase 2 true rms amps.

Phase 3 true rms amps.

This display is updated every second.

Peak Hold Phase Amps

G300 & G400 Only

The maximum value of displayed phase
amps. These are stored in non-volatile
memory when the meter loses auxiliary
power

Press AMPS and VOLTS to reset all
three peaks to zero.

8

System and Balance Amps

G300 & G400 Only

Balance Amps - Instantaneous sum of
the phase current waveforms. This is a
measure of the neutral current + earth
leakage.

System Average Amps =

(Irms1 + Irms2 + Irms3)/3.

Time-Averaged Amps

G100 through G400

The calculated average of phase amps
taken over a user defi nable time period

(10s to 2500s).

T

VI

A rolling time window is used and the
display updated every T

/10 with the

VI

average of the most recent period
displayed.

Peak Time-Averaged Amps

G100 through G400

The maximum value of Time- Averaged
amps. These are stored in non-volatile
memory when the meter loses auxiliary
power

Press AMP and VOLTS to reset all
three peaks to zero.

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