Low Voltage Apparatus. Technical Brochure. FuseLine HRC Fuse Links OFAA, OFAM. Brochure OF 1 GB ABB Control Oy

Transcription

1 Technical Brochure Low Voltage Apparatus FuseLine HRC Fuse Links OFAA, OFAM Brochure OF GB ABB Control Oy

2 95MDN5447 HRC Fuse-Links OFAA and OFAM OFAA gg Fuse-Links for Overload and Short-Circuit Protection OFAA fuse-links are designed to meet all the requirements of the modern industrial installations and electrical power plants. Their breaking capacity is sufficient even at the highest shortcircuit levels. The breaking capacity of OFAA fuses is over ka, when service voltage is the same as rated voltage and frequency is 50 Hz. This is valid for all fuse sizes. Strömberg OFAA 00 5A Strömberg Strömberg OFAA 50A OFAA 400A Strömberg OFAA 3 630A S00346A O OFAM am Fuses for Short-Circuit Protection in Motor Circuits M ~ OFAM am fuse links provide reliable and fast short-circuit protection for motor circuit equipment and cables. Breaking capacity is ka. Overload protection for motor circuit is provided with an overload relay and a contactor. At high overload currents, the am fuse link is faster than the gg fuse link, and at motor starting currents, the am fuse link is slower than the gg fuse link. OFAM am fuse link is now available even in IEC size 00. Rated voltage is V for all fuse sizes. OFAM 00/aM 60A OFAM /am 50A OFAM /am 400A OFAM 3/aM 630A S00347A O How a Fuse-Link Limits Current To prevent danger, and damage to equipment and circuits, short circuit currents need to be intercepted extremely quickly. It is generally the quick temperature rise generated within the short circuit current that causes equipment to breakdown. Fuse links are designed to react to this temperature rise and, therefore, their current limiting capability is very good. Fuse links contain granulated quartz which binds the temperature generated in the arc created by short circuit. At the same time the pressure rises inside the fuse link and the fusing element ruptures. Ceramic cylinder Granulated quartz Fusing element Prospective short circuit current S00398A arc current I ^ i c ^ i s t s t t t v ^ i s = 44kA ^ i c = ka t I t pre-arc I t total 0 0 t s t t I dt I dt t s tv tt ^ i c = melting time of fusing element = arc time = total operation time = current peak value limited by the fuse Construction of the fuse link. ABB Control Oy

3 Fuse Protection - Easy and Reliable Superior Current Limiting Capability Fuse links have an excellent current limiting capability. With standard cable and apparatus dimensions the protection is assured for contactors and overload relays. Short-circuit capacity remains very small. High Safety Factor Visual inspection of a circuit clearly reveals when a fuse link has been removed. Thus, service and maintenance can be safely carried out. Fuses are tested according to IEC 947 standard requirements. IEC 947 type coordination withstands up to V. Type coordination states that all apparatus in the circuit must be in full operation after short circuit. Fuse protection guarantees this without over dimensioning the apparatus. Economical Installation Life time costs of fuse systems are low. Fuse links which can withstand a high fault level and fault current are available at economical prices. After tripping, only the fuse-link has to be changed. Because the fuse links can be rapidly and easily replaced, plant down-time and maintenance is substantially reduced with a fuse link system. Simple Selectivity Fuse links provide a simple procedure for selecting the right fuse type for your installation, without complicated calculations. Fuses prevent "blackouts". Only the fuse nearest a fault trips without upstream fuses (feeders or mains) beeing affected. Fuses thus provide selective coordination. The selectivity, see the pictures below and on previous page: On the feeder side the I t pre-arc value (in the picture fuse size 60 A) has to be bigger than I t total on the load side(in the picture fuse size A). I t-values are on page for OFAA- fuses and on page 5 for OFAM- fuses. S0035A Reliable visible isolation when the fuse link is removed. Fuse M Time S00354A Time Perfect selectivity for all currents 63 A 63A A 60A S0035A Current Fuses: Selectivity between sequential fuse links easily achieved. Breaker Selectivity up to the magnetic trip level of supply side circuit breaker only. Selective Non-selective Thermal trip level Magnetic trip level Intentional trip delay S00355A S00353A M 0x60 A Current Magnetic trip level setting e.g. 0 x 60 A =,6 ka U = V N Breaker: Selectivity condition for MCCB has to be separately calculated. 60A I I S00356A A S00357A A 60A t s t vk Example of selectivity ABB Control Oy 3

4 Fuses Are Key Components to Reliable Protection A reliable protection is costeffectively achieved with fuse links Relative advantage Acc. to IEC standard regarding motor starters, certain coordination categories are defined to protection. Coordination type allows damage to contactor and thermal overload relay after a short-circuit. Operator must inspect starter afterwards and change the apparatus. Failure to do this means the circuit is not protected against overload which can lead to motor damage and cable fire. Circuit breaker Fuse Coordination type guarantees that the starter is in full operation after short-circuit. S00350A The fuse-links are protected acc. to coordination type category even at V. With breakers, to achieve coordination type, problems arise particularly at higher voltages. Generally can be said that at higher voltages, the fuse system is stronger. Low Type Short circuit level Selectivity level Current Voltage Coordination High Type Fuses provide a reliable protection. Fuse-Link Operates Independently of Corrosion Operation time Because the fusing elements operate in a cylinder, they are not affected by their surroundings. Thus their protecting characteristics remain unchanged year after year. Rated current Unlike circuit breakers, corrosion of a motor cannot damage the inside of the fuse link. Fuse The breaking capacity of the contactor Fuse links are designed for different environments: Universal fuses for installations under normal conditions. Fuse links for harsher environments, industrial fuses, provided with an extra thick silver coating (0 µm). S00399A Thermal overload relay Starting current of a motor A Damaging area of thermal relay Welding area of the contactor contacts 0 6 Current I / In Contactor, thermal overload relay and fuse in a motor circuit. With the fuses the short circuit protection of coordination type can be easily ensured without over-dimensioning the components. 4 ABB Control Oy

5 HRC Fuse links Types OFAA, OFAM Contents: HRC Fuse link, type OFAA Ordering information... 6 OFAA -fuses, time-current characteristics... 7 OFAA -fuses, current limitation... 8 OFAA -fuses, I t -values... 0 Dimension drawings... HRC Fuse link, type OFAM M ~ Ordering information... OFAM -fuses, time-current characteristics... 3 OFAM -fuses, current limitation... 4 OFAM -fuses, I t -values... 5 Dimension drawings... 6 ABB Control Oy 5

6 Fuse links, type OFAA Ordering information S00406A S00407A S00405A S00404A Strömberg OFAA 00 5A Strömberg OFAA 50A Strömberg OFAA 400A Strömberg OFAA 3 630A Fuse links OFAA, universal fuses Type code includes one fuse link, but the delivery batch is 3 pieces/package. Type OFAA 00 H OFAA 00 H4 OFAA 00 H6 OFAA 00 H0 OFAA 00 H6 OFAA 00 H0 OFAA 00 H5 OFAA 00 H3 OFAA 00 H35 OFAA 00 H40 OFAA 00 H50 OFAA 00 H63 OFAA 00 H80 OFAA 00 H OFAA 00 H5 OFAA H6 OFAA H0 OFAA H5 OFAA H3 OFAA H35 OFAA H40 OFAA H50 OFAA H63 OFAA H80 OFAA H OFAA H5 OFAA H60 OFAA H00 OFAA H50 OFAA H60 OFAA H00 OFAA H50 OFAA H35 OFAA H400 OFAA 3 H35 OFAA 3 H400 OFAA 3 H OFAA 3 H630 OFAA 00 H-H0 OFAA 00 H4-H0 OFAA 00 H6-H0 OFAA 00 H0-H0 OFAA 00 H6-H0 OFAA 00 H0-H0 OFAA 00 H5-H0 OFAA 00 H3-H0 OFAA 00 H35-H0 OFAA 00 H40-H0 OFAA 00 H50-H0 OFAA 00 H63-H0 OFAA 00 H80-H0 OFAA 00 H-H0 OFAA 00 H5-H0 OFAA H6-H0 OFAA H0-H0 OFAA H5-H0 OFAA H3-H0 OFAA H35-H0 OFAA H40-H0 OFAA H50-H0 OFAA H63-H0 OFAA H80-H0 OFAA H-H0 OFAA H5-H0 OFAA H60-H0 OFAA H00-H0 OFAA H50-H0 OFAA H60-H0 OFAA H00-H0 OFAA H50-H0 OFAA H35-H0 OFAA H400-H0 OFAA 3 H35-H0 OFAA 3 H400-H0 OFAA 3 H-H0 OFAA 3 H630-H0 IEC -size I n [A] U n [V] Fuse links OFAA, industrial fuses Industrial fuses with 0 µm silver coating. Type code includes one fuse link, but the delivery batch is 3 pieces/package. P h [W] Weight [kg] 6 ABB Control Oy

7 OFAA -fuses, melting times FuseLine Fuse links, type OFAA Melting times Values are valid also for industrial fuses OFAA_-H0. S0036A Melting time t v / s Short circuit current I p / A ABB Control Oy 7

8 Fuse links, type OFAA Current limitation OFAA 00 -fuses, current limitation (cut-off characteristic) Values are valid also for industrial fuses OFAA_-H0. Current peak without the fuse =.4 x x I p S00363A Maximum value of current, peak value I s / ka Prospective current I p / ka 8 ABB Control Oy

9 Fuse links, type OFAA Current limitation OFAA -fuses, current limitation (cut-off characteristics) Values are valid also for industrial fuses OFAA_-H0. Current peak without the fuse =.4 x x I p S00365A Maximum value of current, peak value I s / ka Prospective current I p / ka ABB Control Oy 9

10 Fuse links, type OFAA OFAA -fuses, Current limitation OFAA och 3 -fuses, current limitation (cut-off characteristics) Values are valid also for industrial fuses OFAA_-H0. Peak current without the fuse =.4 x x I p S00360A Maximum value of current, peak value I s / ka Prospective current I p / ka 0 ABB Control Oy

11 Fuse links, type OFAA I t -values, Dimension drawings I t -values OFAA 00H 5, _ H 50, _H 400 and _3H 630 for voltage V, other types for voltage V. Values are valid also for industrial fuses OFAA_-H0. I t / A s Total-I kokonais-i t t Melting-I sulamis- I t t Selektiivinen Selectivity B > A + B S004A A B B 0 Fuse, Sulaketyyppi type OFAA OFAA 00H4 00H6 00H0 00 and H6 00 and H0 00 and H5 00 and H3 00 and H40 00 and H50 00 and H63 00 and H80 00 and H 00 H5 H5 and H60 and H00 H50 H50 and 3H35 H400 3H400 3H 3H630 S0048A OFAA -fuses, dimension drawings Values are valid also for industrial fuses OFAA_-H0. e e d f a d f a OFAA 00 H g c S0046A b OFAA H OFAA H OFAA 3 H Type Laji a b c d e f g g c OFAA00H OFAAH OFAAH OFAA3H b ABB Control Oy

12 Fuse links, type OFAM Ordering information Fuse links OFAM, universal fuses Type code includes one fuse link, but the delivery batch is 3 pieces/package. Typ IEC -storlek I n [A] U n [V] P h [W] Weight [kg] M ~ S00409A S00408A OFAM 00 60A OFAM 50A OFAM 00 am 6 OFAM 00 am 0 OFAM 00 am 5 OFAM 00 am 3 OFAM 00 am 40 OFAM 00 am 50 OFAM 00 am 63 OFAM 00 am 80 OFAM 00 am OFAM 00 am 5 OFAM 00 am 60 OFAM am 50 OFAM am 63 OFAM am 80 OFAM am OFAM am 5 OFAM am 60 OFAM am 00 OFAM am 50 OFAM am 5 OFAM am 60 OFAM am 00 OFAM am 50 OFAM am 35 OFAM am 355 OFAM am 400 OFAM 3 am 35 OFAM 3 am 355 OFAM 3 am 400 OFAM 3 am OFAM 3 am S004A S0040A OFAM 400A OFAM 3 630A Fuse links OFAM, industrial fuses Industrial fuses with 0 µm silver coating. Type code includes one fuse link, but the delivery batch is 3 pieces/package. OFAM 00 am 6-H0 OFAM 00 am 0-H0 OFAM 00 am 5-H0 OFAM 00 am 3-H0 OFAM 00 am 40-H0 OFAM 00 am 50-H0 OFAM 00 am 63-H0 OFAM 00 am 80-H0 OFAM 00 am -H0 OFAM 00 am 5-H0 OFAM 00 am 60-H0 OFAM am 50-H0 OFAM am 63-H0 OFAM am 80-H0 OFAM am -H0 OFAM am 5-H0 OFAM am 60-H0 OFAM am 00-H0 OFAM am 50-H0 OFAM am 5-H0 OFAM am 60-H0 OFAM am 00-H0 OFAM am 50-H0 OFAM am 35-H0 OFAM am 355-H0 OFAM am 400-H0 OFAM 3 am 35-H0 OFAM 3 am 355-H0 OFAM 3 am 400-H0 OFAM 3 am -H0 OFAM 3 am 630-H ABB Control Oy

13 Fuse links, type OFAM Melting times OFAM -fuses, melting times Values are valid also for industrial fuses OFAM_-H0. M ~ S00364A Melting time t v / s Short circuit current I p / A ABB Control Oy 3

14 Fuse links, type OFAM Current limitation OFAM -fuses, current limitation (cut-off characteristics) Values are valid also for indusatrial fuses OFAM_-H0. M ~ Current peak without the fuse =.4 x x I p S0036A Maximum value of current, peak value I s / ka Prospective current I p / ka 4 ABB Control Oy

15 Fuse links, type OFAM I t -values I t -values Values are valid also for indusatrial fuses OFAM_-H0. I t / A s Total-I kokonais-i t, Vt, V Total-I kokonais- t, I V t, V Total-I kokonais- t, 400 I Vt, 400V Melting-I sulamis- t I t, 400V M ~ 0 I t / A s aM6 00aM0 00aM5 00aM3 00aM40 00aM50 00aM63 00aM80 00aM 00aM5 00aM60 Total-I kokonais-i t, Vt, V Melting-I sulamis- t I t, 400V Fuse, Sulaketyyppi type OFAM OFAM S0049A Selektiivinen Selectivity B > A + B S004A A B B Sulaketyyppi Fuse, type OFAM OFAM am50 am63 am80 am am5 am60 am00 am50 am5 am60 am00 am50 am35 am355 am400 3aM35 3aM355 3aM400 3aM 3aM630 S0040A ABB Control Oy 5

16 Fuse links, type OFAM Dimension drawings Dimension drawings Values are valid also for indusatrial fuses OFAM_-H0. e e d f a OFAM 00 d f a S0047A b g c OFAM OFAM OFAM 3 Type Laji a b c d e f g g c OFAM00aM OFAM00aM...60 OFAMaM OFAMaM OFAM3aM b ABB Control Oy P.O.Box 6 FIN VAASA Finland Telephone Telefax The technical data and dimensions are valid at the time of printing. We reserve the right to subsequent alterations. Waasa Graphics Oy, 3/996