CoolBlue Ringbandkerne
CoolBlue® Ringbandkerne aus unserem nanokristallinen Werkstoff Nanoperm® werden zur Reduzierung von schädlichen Motorlagerspannungen/-strömen bei Umrichter-Antriebssystemen hoher Leistung und/oder hohen Taktfrequenzen eingesetzt. Durch die unerwünschten Lagerströme kommt es zur Mattierung / Riffelung der Motorlager, zum Durchschlag der Lagerschmierung und schließlich zum Ausfall des kompletten Motors.
Durch gezielten Einsatz von CoolBlue® Ringbandkernen werden – neben der Reduzierung der Überspannungen an den Motorklemmen – auch die durch parasitäre Ableitkapazitäten des Motorkabels und des Motors verursachten asymmetrischen Störströme signifikant unterdrückt.
High frequency common mode currents leading to electrical breakdown in the lubrication of the motor bearings and are causing additional maintenance costs.
The Magnetec Nanoperm CoolBlue® line made of nanocrystalline material Nanoperm is being used to reduce damaging motor bearing currents in inverter – motor systems.
The CoolBlue® cores are used for suppressing the common mode EMI noise generated by the frequency converters. In order to achieve an efficient reduction of these destructive effects, CoolBlue cores have to be placed over the connector cables (without N and PE) in the DC-link or at the inverter output. In this configuration, the cores operate as a common-mode choke.
CoolBlue® Selection Guide
| Kilowatt | ≤ 0,7 | ≤ 7,5 | ≤ 30 | ≤ 75 | ≤ 315 | ≤ 1.200 | > 1.200 | |
| Part No oval | n/a | M-049 | M-049 | M-283 | M-302 | M-111 | M-248 | |
| Part No round | M-923 | M-967 | M-967 | M-113 | M-116 | M-117 | M-205 | |
| Isat*/Apk N=1 | 2 | 4 | 4 | 6 | 12 | 16 | 22 | |
| Turns [N] | 2 | 2 | 1 | 1 | 1 | 1 | 1 | |
| Cable | 50m | 2 | 2 | 4 | 4 | 4 | 4 | 4 |
| length | 100m | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| up | 200m | 4 | 4 | 6 | 6 | 6 | 6 | 6 |
| to | 300m | 4 | 4 | 6 | 6 | 6 | 6 | 6 |
CoolBlue® tape wound cores to reduce motor-bearing currents
| Types | Nominal dim. [mm] do x di x h |
Finished dim [mm] Domax x Dimin x Hmax | Al [uH] @ 10kHz | Al [uH] @ 100kHz | Lfe [cm] | Afe [cm²] | Isat* [Apk] |
| M-923 | 30 × 20 × 10 | 32,7 × 17,8 × 12,6 | 13,6 – 27,2 | >6,70 | 7,8 | 0,36 | 2,0 |
| M-967 | 50 × 40 × 20 | 53,4 × 36,6 × 23,5 | 10,4-20,8 | >7,30 | 14,1 | 0,73 | 4,5 |
| M-049 | 50 × 40 × 20 | oval:60,7/40,7×42,7/24,8×22,3 | 12,6 – 28,4 | >6,30 | 14,1 | 0,8 | 3,5 |
| M-112 | 63 × 50 × 30 | 68 × 43 × 36 | 23,3 – 46,6 | >11,0 | 17,7 | 1,44 | 4,5 |
| M-649 | 63 × 50 × 30 | oval:82,8/45,5×57,5/20,6×33 | 23,3 – 46,6 | >11,0 | 17,7 | 1,44 | 4,5 |
| M-378 | 75 × 50 × 30 | 80 × 43 × 36 | 37,3 – 74,6 | >18,5 | 19,4 | 2,78 | 5,0 |
| M-113 | 80 × 63 × 30 | 85 × 57 × 35,5 | 24,1 – 48,2 | >12,0 | 22,4 | 1,86 | 6,0 |
| M-283 | 80 × 63 × 30 | oval: 101/62×68/28×37 | 24,1 – 48,2 | >12,0 | 22,4 | 1,86 | 6,0 |
| M-114 | 100 × 80 × 30 | 105 × 75 × 35 | 22,5 – 45,0 | >11,2 | 28,2 | 2,25 | 7,5 |
| M-284 | 100 × 80 × 30 | oval: 130/66×94/30×37 | 22,5 – 45,0 | >11,2 | 28,2 | 2,25 | 7,5 |
| M-115 | 130 × 100 × 30 | 135 × 94 × 34 | 24,6 – 52,9 | >12,2 | 35,9 | 3,33 | 9,5 |
| M-116 | 160 × 130 × 30 | 165 × 123 × 34 | 20,9 – 45,0 | >10,5 | 45,4 | 3,24 | 12 |
| M-302 | 160 × 130 × 30 | oval: 197/111×155/69×36 | 20,9 – 45,0 | >10,5 | 44,7 | 3,30 | 12 |
| M-117 | 200 × 175 × 30 | 208 × 166 × 37 | 12,3 – 24,6 | >6,00 | 58,8 | 2,74 | 15,5 |
| M-111 | 237 × 201 × 30 | oval: 305/147×249/95×37 | 14,5 – 29,9 | >7,20 | 69,6 | 3,94 | 18,5 |
| M-205 | 300 × 254 × 30 | 304 × 246 × 36 | 15,8 – 31,5 | 7,20 | 87,1 | 5,20 | 23 |
| M-248 | 300 × 254 × 30 | oval: 392/160×326/94×37 | 15,8 – 31,5 | >7,90 | 87,1 | 5,20 | 23 |
| M-503** | 500 × 450 × 30 | 513 × 437 × 37 | 8,0 – 20,0 | 149,1 | 5,60 | 40 | |
| “Only for information, no guaranteed values . For all information no liability assumed. *Isat: ""Quasi Saturation Current"" @ B = 1,0 T / μnom / N = 1 Saturation Current Isat of NANOPERM®: Peak value of the exiting current when the initial inductance level is dropped to 10 per cent, see www.magnetec.de ; oval: stadium shape" | |||||||