Máy tạo dòng điện 200A-3PH/ED

Features

· 0-200A 3 phase output

· Accurate true RMS digital

metering

· All outputs fully isolated

· Multi-function 1ms resolution

timing system

· Auxiliary AC output

· Electronic over-current

protection

· Compact and portable

T&R Test Equipment is a market leader in the field of current

injection  equipment.  The  range  includes  single  phase  units

with 100A-6000A output capability and  three phase systems

up  to  200A.   All  have  true  RMS metering,  a  flexible  timing

system, and an easy to understand user interface.

The 200A-3PH/ED  test  system  provides  commissioning and

maintenance engineers with a compact, portable and  flexible

system  for  the  testing and  timing of protective  relays, circuit

breakers and thermal overloads.  The unit is equally at home

testing solid state or electro-magnetic relays, and has a rating

suitable for testing thermal trips.

The 200A-3PH/ED has independent true rms digital metering

for each output with independently selectable ranges.

The  outputs  are  isolated and  independently  variable  and

allow  the  injection of  currents  up  to 200A.  The outputs are

protected by electronic over-current trips and fuses.

The  timing  system  on  the  200A-3PH/ED  is  flexible  and

exceptionally easy to use, allowing trip times to be  measured

to  a  high  degree  of  accuracy.   Units with  auxiliary  contacts

may be timed using the NC or NO timer modes, and devices

with  no  auxiliary  contacts  may  be  timed  using  the  current

operated mode.  

The unit is ideal for testing the following devices:

· Over and under current relays

· IDMT relays

· Thermal overloads

· Magnetic circuit breakers

The  unit  may  also  be  used  in  conjunction  with  the  DVS3

digital  voltage  source  to  test  protection  systems  requiring

three  voltages  and  three  currents.   Protection  that may  be

tested in conjunction with the DVS3 includes:

· Directional relays

· Distance protection

· Power relays and transducers

Features

· 0-200A 3 phase output

· Accurate true RMS digital

metering

· All outputs fully isolated

· Multi-function 1ms resolution

timing system

· Auxiliary AC output

· Electronic over-current

protection

The  units  have  three  independently  controlled  outputs,  one  for

each  phase.    The  output  is  switched  on  and  off  by  illuminated

pushbuttons, and the current is set using the three control knobs

on  the  front  panel.    All  ranges  are  continuously  variable  from

zero.   

Range             Continuous      5 minutes       1 minute 

5V                  50A                    100A                200A     

The above intermittent on times must be followed by an off time

of 15 minutes, and are based on an ambient temperature of 25°C.

Auxiliary AC Outputs

A switched, isolated auxiliary 240V 50mA AC supply is available

to power auxiliary control circuits.  The output  is protected by a

fuse.

Metering

The  output  on  the  200A-3PH/ED  is  metered  by  a  digital  true

RMS  system with a 3.5 digit LED display.   The  range  for each

channel  is  independently selected  for each channel by a switch

on the front panel.

Range             Resolution      Trip Current     Accuracy

10A                0.01A                 11.5A               ±0.6% rdg+6d

20A                0.01A                 23A                  ±0.6% rdg+6d

100A              0.1A                   115A                ±0.6% rdg+6d

200A              0.1A                   230A                ±0.6% rdg+6d

An electronic current trip is automatically set to 115% of full scale

of the selected metering range to protect the device under test.

Supply Requirements   

400V+14%-6%            50/60Hz 3ph 4 wire 3300VA max

A delta-star transformer is available as an optional accessory for

operation from a 3 wire supply.

Temperature Range       

Storage        -20°C to 60°C

Operating        0°C to 45°C

Dimensions                                                            Weight

200A-3PH/ED       315mm x 550mm x 300mm               35kg           

Accessories Supplied With Unit

Operating manual, mains  lead,  spare  fuse  set,  5m  200AL/3PH

output lead set.

Lead Set specifications

The 200AL/3PH lead set includes the following items:

6 x 5m 25mm2 

200A leads terminated in M10 fork crimps

1 x 5m 2 core auxiliary lead terminated in 4mm plugs

1 x 5m 2 core auxiliary lead terminated bare ends

The lead set is supplied in a reinforced plastic wallet.

Optional Accessories

200A-3PH delta-star transformer.

Timing System

The timing system on the 200A-3PH/ED is very flexible, allowing

a wide range of protective devices to be timed. 

Range             0-999.999s

Resolution       1ms

Accuracy         0.01% rdg +1d (all except current operated mode)

                        0.01% rdg +3d (current operated mode)

The  contact  circuit has an open  circuit  voltage of 24Vdc and a

short circuit current of 300mA.  The contacts may be connected

to  volt-free  contacts  or  contacts  connected  to  a  DC  voltage

system (220Vdc maximum).

The following functions are provided:

Mode                             Timer Start                  Timer Stop

Normally Open           Press ‘ON’                    Contact closes

Normally Closed         Press ‘ON’                    Contact opens

Current operated        Current > 20%            Current < 20%

                                      of range                        of range

Off                                 Timer inoperative      Timer inoperative

The output is automatically switched off at the end of the test to

safeguard the relay under test.  

Protection and Safety

The 200A-3PH/ED is protected by electronic over current trips on

the  outputs,  fuses  on  the  contact  input,  the  mains  input  and

regulators.

The auxiliary AC output  is  fuse  protected.  An earth  terminal  is

provided for connection to a local earth. 

The  unit  is  designed  to  comply  with  BSEN61010,  and  is  CE

marked.

Optional Delta-Star Supply Transformer

The optional delta-star supply  transformer allows operation from

115V, 230V, 400V, and 440V 3 wire (delta) supplies.  The  input

voltage  is selected by a  switch on  the unit.   An auxiliary single

phase output is also provided to supply power to a DVS3 voltage

source.

Input:               115V, 230V, 400V, 440V ±10%

                        3 wire, 4000VA max

3f output:       400V 4 wire    3300VA 1 min on/15 min off

                                                   1100VA continuous

1f output:       230V                  300VA 5 min on/15 min off

                                                   150VA continuous