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dynamp lkp
the lkp-30 is a high accuracy, “closed-loop” hall effect system designed to accurately and reliably measure unidirectional dc bus currents up to 30 k amperes. this “system” consists of a two-piece measuring head, which installs around the bus, an electronics unit and two multiconductor cables connecting the two.
application
the lkp-30 is particularly well suited to measure individual as well as total bus currents in electro-chemical processes including aluminum, chlorine, copper, manganese, titanium, zinc as well as electroplating and coating processes.
specifications
input
full scale (fs) bus current 30 ka
based on approved dynamp bus analysis
output
voltage scaling 10 mv per bus ka
voltage full scale 300 mv
voltage accuracy ± 0.1% of fs **
current scaling 200 ma per bus ka
current full scale 6 a
current loop max burden 15 v
current accuracy ± 0.1% of fs ** repeatability ± 0.02% of fs
plus core set
linearity (5...100% of fs) ± 0.03% of fs
temperature sensitivity ± 0.002% of fs per ºc
mains
available input ranges 100v: 85 to 110v rms
120v: 102 to 132v rms
200v: 170 to 220v rms
220v: 187 to 242v rms
240v: 204 to 264v rms
frequency 50hz.: 45 to 55 hz.
60hz.: 55 to 65 hz.
power requirements 20 va / bus ka typical
impact of mains variation 100, 120, and 200v:
on accuracy ± 0.001% fs / v rms
220, 240v:
± 0.0005% fs / vrms
isolation
bus to output 6 kvac for 1 minute with
25 mm air gap
mains supply to output 1.5 kvac for 1 minute
mains supply to chassis 1.5 kvac for 1 minute
output to chassis 1.5 kvac for 1 minute
bus to head structure 6 kvac for 1 minute with
25 mm air gap
environmental
operating temperature -4° to 130° f
-20° to 55° c
storage temperature -4° to 150° f
-20° to 65° c
installation restrictions: ref. tech. bulletin 990
physical
measuring head enclosure ip-649
measuring head weight 139 lbs. / 63 kg
electronics unit enclosure ip-20
electronics unit weight 62 lbs. / 28 kg (max.)
interconnecting cable(s) 33 ft / 10 m standard
(head to meter unit) 2 cables
** at dynamp reference conditions:
77° f ± 4° f (25º c, ± 2º c)
120/240 v rms. ± 2%, 60 hz + 1hz.