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HI PERFORMANCE ELECTRONIC LOADS
Hi Performance Electronic Load 120V 60A 300W,  500V 6 A 300W

ELA-305 Electronic Load. Low Voltage Operation. Voltage 120V, Current 60A. 300W, 20A/us slew rate.
 ELB-305 Electronic Load. Low Voltage Operation. Voltage 300V, Current 30A, 300W, 10A/us slew rate.
 ELC-305 Electronic Load. Low Voltage Operation. Voltage 500V, Current 12A, 300W, 1A/us slew rate.

Constant Current (CC), Constant Resistance (CR), Constant Voltage (CV), Constant Power (CP), External Control, Dynamic, Sequence, Short and Current Limit modes.
Dynamic mode : Up to 16 combinations of any Current & Time can be set.

  • Loading power can be expanded by parallel
    operation.

  • Peak power handling of up to 30 time of rated power. (ELB-305 / 9kW)

  • Low Input DC Voltage. Operated nearly from 0V.

  • Sequence mode up to 1024 steps

  • Standard Current Monitor and TRIG OUT

  • Standard GPIB and USB interface

  • Ripple noise measurement (Factory option only)
Max rating
  ELA-305 ELB-305 ELC-305
Current 60A 30A 12A
Voltage 120V 300V 500V
Internal min resistance(*9) 17m ohm 67m ohm 250m ohm
Internal inductance
(Typ)(*9) 		250nH 400nH 2uH
Min operating voltage(*8, 9) 1V(60A) / 0.5V(30A) / 0.2V(12A) 2V(30A) / 1V(15A) / 0.5V(7.5A) 3V(12A) / 1.5V(6A) / 0.7V(2.4A)
Peak power(*7) 20us or less 7200W 9000W 6000W
2s or less 800W 800W 800W
20s or less 500W 500W 500W
Rated power 300W
    CC mode
Current range
(Setting range) 		H 0 - 60A 0 - 30A 0 - 12A
M 0 - 6A 0 - 3A 0 - 1.2A
L 0 - 0.6A 0 - 0.3A 0 - 0.12A
Nominal resolution(*1) H 5mA 2.5mA 1mA
M 0.5mA 0.25mA 0.1mA
L 0.1mA 0.05mA 0.02mA
Accuracy(*4) H +/- 0.2% of stg. +/- 25mA+Vin/Rin +/- 0.2% of stg. +/- 15mA+Vin/Rin +/- 0.2% of stg. +/- 10mA+Vin/Rin
M +/- 0.2% of stg. +/- 12mA+Vin/Rin +/- 0.2% of stg. +/- 6mA+Vin/Rin +/- 0.2% of stg. +/- 3mA+Vin/Rin
L +/- 0.2% of stg. +/- 6mA+Vin/Rin +/- 0.2% of stg. +/- 3mA+Vin/Rin +/- 0.2% of stg. +/- 2mA+Vin/Rin
    CR mode
Voltage range 20V 50V 85V
Current range
(Setting range) 		Current range: H 0.025 - 200 ohm 0.1 - 800 ohm 0.3 - 2.5k ohm
Current range: M 0.25 - 2k ohm 1 - 8k ohm 3 - 25k ohm
Nominal resolution(*1) Current range: H 4ms 1ms 333us
Current range: M 400us 100us 33us
Voltage range 120V 300V 500V
Current range
(Setting range) 		Current range: H 0.075 - 600 ohm 0.3 - 2.5k ohm 0.9 - 7k ohm
Current range: M 0.75 - 6k ohm 3 - 25k ohm 9 - 70k ohm
Nominal resolution(*1) Current range: H 1.33ms 333us 111us
Current range: M 133us 33us 11us
Accuracy(*2, 4, 6) +/- 0.5% of Conv. Curr. +/- 0.2% of f.s. +Vin/Rin
    CV mode
Voltage range
(Setting range) 		H 0 - 120V 0 - 300V 0 - 500V
L 0 - 20V 0 - 50V 0 - 85V
Nominal resolution(*1) H 10mV 30mV 50mV
L 2mV 5mV 10mV
Accuracy +/- 0.2% of stg. +/- 0.2% of f.s.
Response time Fast/Slow (300us/10ms Typ)
    CP mode
Power range Current range: H 0 - 300W
Current range: M 0 - 40W
Nominal resolution(*1) Current range: H 50mW
Current range: M 5mW
Accuracy(*4) +/- 2.5% of stg. +/- 1% of f.s. +/- (VinXVin)/Rin

    External control mode

Current range
(Setting range) 		H 0 - 60A 0 - 30A 0 - 12A
M 0 - 6A 0 - 3A 0 - 1.2A
Nominal resolution(*1) H 10mA 5mA 2mA
M 1mA 0.5mA 0.2mA
Accuracy(*4, 5) +/- 0.2% of stg. +/- 0.5% of f.s. +Vin/Rin
Control voltage 0 - 10V
    Dynamic load mode
   Dynamic mode
Control method Switching
Loading mode CC mode
Setting period - 20ms / - 200ms / - 2s / - 20s / - 60s
Period resolution 1us / 10us / 100us / 1ms / 10ms
Operating mode Continuous, Single
Slew rate
(Current range) 		H 0.2 - 20A/us 0.1 - 10A/us 0.01 - 1A/us
M 0.02 - 2A/us 0.01 - 1A/us 0.001 - 0.1A/us
L 0.002 - 0.2A/us 0.001 - 0.1A/us 0.0001 - 0.01A/us
Min load response time(*3) 500ns
   Sequence mode
Loading mode CC / CR / CV / CP mode
Max steps 1024
Step duration 1ms - 10min
Duration resolution 1ms(1ms - 100ms) / 100ms(100ms - 10min)
    Short mode
Short current (MAX) 60A 30A 12A
    Current limit setting
Current range
(Setting range) 		H 0.3 - 60A 0.15 - 30A 0.06 - 12A
M 0.03 - 6A 0.015m - 3A 0.006m - 1.2A
Nominal resolution(*1) H 0.3A 0.15A 0.06A
M 30mA 15mA 6mA
    Parallel operation
Master-Slave operation. One master unit can control up to 4 units of slaves of same voltage rating. For example: If the master unit is ELA-305 then ELA-155, ELA-305 or ELA-1005 may be connected as slave unit.

 

*1 : Nominal resolution: Approximated resolution of the range.
*2 : Conv.Curr: Ideal current value being calculated by [input / set R]
*3 : Min load response time: Minimum time required by the load when setting slew rate.
*4 : Rin: ELA-155 : 100kohm(typ) ELB-155 : 200kohm(typ) ELC-155 : 1500kohm(typ)
*5 : External control setting accuracy: Setting accuracy is defined when external control
      voltage of 10V   is fed.
*6 Setting accuracy in CR mode is valid when applied 10% or more voltage of the
    voltage range.
*7 : It may vary in accordance to the internal temperature.
*8 Minimum operating voltage vary according to the current value.
*9 At rear loading terminals.

Measuring Section
DC Voltage
  ELA-305 ELB-305 ELC-305
Range H 120.00V 300.00V 500.00V
L 20.000V 50.000V 85.000V
Resolution H 10mV 10mV 10mV
L 1mV 1mV 1mV
Accuracy(*1) +/- 0.05% of rdg. +/- 0.05% of f.s.
Measuring time(*2) Approx. 100ms
    DC Current
Range(*3) H 60A 30A 12A
M 6A 3A 1.2A
L 0.6A 0.3A 0.12A
Resolution H 0.5mA 0.5mA 0.5mA
M 0.1mA 0.1mA 0.1mA
L 0.1mA 0.1mA 0.1mA
Accuracy(*1) H, M +/- 0.2% of rdg. +/- 0.2% of f.s.
L +/- 0.2% of rdg. +/- 0.5% of f.s.
Measuring time(*2) Approx. 100ms
    Power
Measuring method(*4) Calculation by [Voltage X Current]
Measuring time(*2) Approx. 200ms

*1 Guaranteed for 6 months at 23 +/- 5C, <70% RH
*2 Measurement time when set at same measuring mode and range.
*3 Current measurement range depends on load setting range.
*4 Absolute value of the measurement.

General
General
  ELA-305 ELB-305 ELC-305
Loading terminals on front & rear panel
Rated AC input AC100 - 240V +/- 10% 50/60Hz
Power consumption < 45VA (When in AC100V)
Operating temperature 5 - 40C
Cooling system Forced cooling fan
Dimensions 215(W) X 128.6(H) X 420(D) excluding projected part
Weight Approx. 10Kg
    Interface
GP-IB Conforming to IEEE488.1
USB Conforming to USB1.1
External control voltage 0 - 10V
    Protection, Alarm
Over current protection Protect load section by limiting the current.
Over power protection Protect load section by limiting the power.
Over voltage alarm Generate alarm when over voltage is applied.
Temperature protector Generate alarm and cut off the output when overheaded.
Reverse connection alarm Generate alarm when reverse voltage is applied.

* Noted that the alarm function does not protect the instrument. Remove the cause of alarm to protect the instrument.

 TRIG OUT
  ELA-305 ELB-305 ELC-305
Output(*1) Photo coupler output
Output voltage CC1 +5V (Typ)
CC2 - CC16 0V (Typ)
    CURRENT MONITOR
Current range(*2, 3) H, M 1V / 60A f.s. 1V / 30A f.s. 1V / 12A f.s.
L 0.04V / 0.6A f.s. 0.04V / 0.3A f.s. 0.04V / 0.12A f.s.
Output resistance 50 ohm
Accuracy(*4) H, M +/- 1% of Conv.Volt. +/-1 % of f.s.
L +/- 5% of Conv.Volt. +/- 3% of f.s.

*1 TRIG OUT: Isolated
*2 CURRENT MONITOR: Not isolated
*3 Full scale of the current monitor and rated current are different in current range High, Mid and Low.
*4 Conv.Volt means approximated value of [Measured current X (FS of current monitor / Rated current)]

 

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

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