Baoding Mingrui Optoelectronics Technology Co. Ltd.

Baoding, Hebei, China

• MOQ 1 Set(s)

We are offering Neutral Grounding Resistor. Neutral grounding resistors are rated in line-to-neutral voltage (system voltage divided by 1.732), initial fault current and maximum time on. Mingrui neutral grounding resistors are designed to dissipate the required amount of energy and not exceed the temperature limitations of IEEE Standard 32-1972. As defined in this publication, the time and temperature ratings for neutral grounding resistors are as follows: Short time: Short time ratings are 10 and 60 seconds. Since short time rated resistors can only withstand rated current for short periods of time, they are usually used with fault clearing relays. The short time temperature rise for the resistive element is 760K. Extended time: A time on rating greater than ten minutes which permits temperature rise of resistive elements to become constant, but limited to an average not more than 90 days per year. The extended temperature rise for the resistive element is 610C. Continuous: Capable of withstanding rated current for an indefinite period of time. The continuous temperature rise for the resistive element is 385C.

• MOQ 1 Set(s)

We are offering arc suppression coil (asc). brief : single-phase neutral grounding (earthing) reactors (arc suppression coils) are intended to compensate for the capacitive line-to-ground current during a single phase ground-fault. Structure 1.mrd-xhz micro-computer controller and pk controlling panel. 2.grounding transformer 3.regulated load arc supression coil 4.mrd damping resistor cabinet as well current/voltage transformer. Operation conditions 1.abient temp. Of operation is between -20 centigrade and +40 centigrade 2.relative humidity of air is or less than 80%(+20 centigrade) 3.altitude does not excess 2000m(if excess, pls indicate in order) 4.there is no corrosive gas around the site, so is conductive dust 6.there is no severe shocked movement around the site.

• MOQ 1 Set(s)

We are offering neutral earthing transformer. parameters of grounding transformer insulation grade: h cooling-down method: an temperature rise ≤ 100k proctective grade of paper insulation dry-type connected transformer is ip00 (without casing), ip20 and ip23 (with casing) insulation level, impedance voltage, no-load loss and on-load loss are as per national standards. Test of inpedance: high voltage to low voltage or grouding ≥300 mω, low voltage to grounding ≥100 100 mω.