Load Box MLT-1 / MLT-LB902

Product overview:
This load box is designed and manufactured according to IEC 60884、IEC 61058、 IEC 606691 standards and etc. It is used for the on-off ability test and the normal operation lifespan test of the Switches for household and similar fixed-electrical installations. Besides, it is also applied in the test of breaking volume of plug and socket, and mechanical action of normal operation lifespan.
This device is with blue framework and gray cover. The top of this apparatus is the operation control panel on which there are switches for controlling power supply, for the electric capacity conversion and for the load type conversion. There are also the displaying meters of connecting current and voltage as well as power, the buttons of start and stop, alarm, the status indicator light and so on. Below are the according knobs for output voltage adjustment, for current adjustment and for inductance adjustment. There are two load lines. Each of them has the function of resistive, inductive and capacitive Load test. The kind of load test can be chosen by the transferring switch. The load box inside is cooled by the strong wind convection. There are terminals below the load box through which the load box can be connected with the switch and plug-socket endurance tester using the wire. During the process of test, the equipment outputs the current and voltage aswell as power.

Technical parameters:

item MLT-LP-1 MLT-LP-2
Power supply with ground wire AC220V/50Hz, or with ground wire AC220V/50Hz, or 110V, 60Hz
110V, 60Hz
Working station One stations Two stations
Digital display voltage meter 0~300V、acurancy:±0.5% 0~300V、acurancy:±0.5%
Digital display current meter 0~30A、accurancy:±0.5% 0~30A、accurancy:±0.5%
Digital display power meter 0~20KW、accurancy:±0.5% 0~20KW、accurancy:±0.5%
Digital display power factor meter 0.3~0.999、accurancy:±0.5% 0.3~0.999、accurancy:±0.5%
Load method Resistive, inductive and capacitive load (three in one) it can be transformed. Resistive, inductive and capacitive load (three in one) it can be transformed.
Capacitive load 70uf、140uf、7.3uf can be chosen. 70uf、140uf、7.3uf can be chosen.
Load output  Each power and interval power can be chosen. Each power and interval power can be chosen.
Counter 0~9999,it can be preset. 0~9999,it can be preset.
The volume of load 2*20KVA 2*20KVA
The maximum ofoutput currentthe 30A, when it exceeds 32A, it stopped automatically. 30A, when it exceeds 32A, it stopped automatically.
The maximum of output voltagethe 300V, when it exceeds 305V, the load is stopped automatically. 300V, when it exceeds 305V, the load is stopped automatically.
Atmospheric pressure 80~106kpa 80~106kpa
Environmental temperature 5~40°C 5~40°C
Relative humidity (20~90)%RH (20~90)%RH
Using place No violent shakingWithout electromagnetic interference and dust. No explosive or corrosive gas.  Good heat dissipation No violent shakingWithout electromagnetic interference and dust. No explosive or corrosive gas.  Good heat dissipation
Size and weight L*W*H=600*660*1600mm,480kg L*W*H=770*660*1680mm,600kg


Load Box MLT-1 / MLT-LB902