Technical data effective: may 1998 page 1 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear new information mailed to: e, c/32-000b www . Electricalpartmanuals . Com.
Technical data effective: may 1998 page 2 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear why magnum ds switchgear . . . . . . . 2 ratings voltage ratings. . . . . . . . . . . . . . . . . . . 3 bus ratings . . . . . . . . . . . . . . . . . . . . . . 3 standards . . . . . ...
Technical data effective: may 1998 page 3 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear table r1 – voltage ratings (ac) system voltage maximum voltage 208/240 480 600 254 508 635 table r4 – ratings of magnum ds breakers breaker type frame amperes ratings, rms symmetrica...
Technical data effective: may 1998 page 4 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear ratings the narrow-band characteristic curve graphically illustrates the close coordi- nation obtainable in breaker systems with digitrip rms tripping devices. Repeatability is withi...
Technical data effective: may 1998 page 5 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear ratings table r8 – digitrip ground fault current pickup settings pickup settings – ground fault currents (amperes) ➀ 0.25 ➁ 0.3 ➁ 0.35 ➁ 0.4 ➁ 0.5 ➁ 0.6 0.75 1.00 installed rating pl...
Technical data effective: may 1998 page 6 td.44a.01.T.E cutler-hammer 1. There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or t...
Technical data effective: may 1998 page 7 td.44a.01.T.E cutler-hammer 1. There is a memory effect that can act to shorten the long delay. The memory effect comes into play if a current above the long delay pickup value exists for a time and then is cleared by the tripping of a downstream device or t...
Technical data effective: may 1998 page 8 td.44a.01.T.E cutler-hammer 1. The end of the curve is determined by the interrupting rating of the circuit breaker. 2. For phase time/current curves, see curves 70c1006 and 70c1007. 3. The curve is shown as a multiple of the rating plug (ln). 4. The ground ...
Technical data effective: may 1998 page 9 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear ratings table r13 – metering type current transformers for mounting in circuit breaker compartments ansi meter accuracy classification breaker frame rating ratio ratio b-0.1 b-0.2 b-...
Technical data effective: may 1998 page 10 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application standards magnum ds circuit breakers meet or exceed all applicable requirements of ansi standards c37.13, c37.17, c37.50 and csa. System voltage and frequency magnum ds ...
Technical data effective: may 1998 page 11 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application unit substations most magnum ds switchgear assem- blies are configured as unit substations. A unit substation, as referred to in this publication, is defined as a coordi...
Technical data effective: may 1998 page 12 td.44a.01.T.E cutler-hammer (m) (t) (m) magnum ds metal-enclosed low-voltage switchgear application types of systems a. Simple radial ■ simplest and least costly ■ easy to coordinate b. Primary selective radial similar to simple radial, with added advantage...
Technical data effective: may 1998 page 13 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application system application most magnum ds switchgear is fed from power transformers. To facilitate minimum breaker sizing, tables a1 through a4 iists the calculated second- ary ...
Technical data effective: may 1998 page 14 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear group motor feeder breakers typical loads for such circuits are motor control centers. The feeder breakers may be either manually or electrically operated as preferred, and are usua...
Technical data effective: may 1998 page 15 td.44a.01.T.E cutler-hammer figure a1. Three-wire distribution, delta source (ungrounded) figure a2. Three-wire distribution, wye source (ungrounded) figure a3. Four-wire distribution, solidly grounded system figure a4. Three-wire distribution, solidly grou...
Technical data effective: may 1998 page 16 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear since ungrounded and resistance grounded systems produce minimal ground current, no damage occurs to the grounded equipment. These ground currents are also too low for detection by ...
Technical data effective: may 1998 page 17 td.44a.01.T.E cutler-hammer high-resistance grounding where continuity of service is a high priority, high-resistance grounding can add the safety of a grounded sys- tem while minimizing the risk of ser- vice interruptions due to grounds. The concept is a s...
Technical data effective: may 1998 page 18 td.44a.01.T.E cutler-hammer ground fault when the sensing circuit detects a fault, the green “normal” light will turn off and the red “ground fault” light will turn on. The ground current ammeter will indicate the total ground current. To use the pulser, tu...
Technical data effective: may 1998 page 19 td.44a.01.T.E cutler-hammer hv 600/347 (max.) wye to distribution equipment c b a 3 2 1 am 51n pulser resistor grounding resistor g high-resistance grounding assembly test resistor control circuit clf clf clf g r w n n hv 600/347v (max.) wye to distribution...
Technical data effective: may 1998 page 20 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear the following provides guidelines for ground fault protection. System advantages disadvantages equipment available for protection main breaker tie breaker fdr. Breaker notes ungroun...
Technical data effective: may 1998 page 21 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear ➀ apply in 4-wire systems for main breaker only when no other grounded sources are connected to the same system. Application residual main and feeder breaker sketch 1 ➀ zero sequenc...
Technical data effective: may 1998 page 22 td.44a.01.T.E cutler-hammer n1 a c c b a n1 n2 t1 52-1 a b c c b a n1 n2 t2 52-2 c b a n1 n2 c b a n1 n2 52-t typical feeder a b c t1 b a n1 n2 c a b c t2 b a n1 n2 c b a n1 n2 c b a n2 c sketch 6. Gf trip unit gf trip unit gf trip unit 0.22 sec. 0.22 sec. ...
Technical data effective: may 1998 page 23 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application application of magnum ds power circuit breakers with standard three-phase transformers – fluid filled and ventilated dry types transformer base (100%) rating secondary s...
Technical data effective: may 1998 page 24 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application application of magnum ds power circuit breakers with standard three-phase transformers – fluid filled and ventilated dry types, continued transformer base (100%) rating ...
Technical data effective: may 1998 page 25 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application application of magnum ds power circuit breakers with standard three-phase transformers – fluid filled and ventilated dry types, continued transformer base (100%) rating ...
Technical data effective: may 1998 page 26 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application table a5 – breaker arrangements ➀➁➂➃ main sections blank or instrument blank or instrument blank or instrument blank or instrument blank or instrument main 800 1600 2000...
Technical data effective: may 1998 page 27 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application table a5 – breaker arrangements ➀➁➂➃ main sections feeder sections blank or instrument feeder 800 1600 2000 ➄ feeder 800 1600 feeder 800 1600 blank or instrument feeder ...
Technical data effective: may 1998 page 28 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application table a5 – breaker arrangements ➀➁➂➃ tie sections/combination main and tie sections feeder 800 1600 2000 feeder 800 1600 2000 blank or instrument feeder 800 1600 blank o...
Technical data effective: may 1998 page 29 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application table a5 – breaker arrangements ➀➁➂➃ tie sections/combination main and tie sections blank or instrument feeder 800 1600 feeder 800 1600 feeder 800 1600 feeder 800 1600 m...
Technical data effective: may 1998 page 30 td.44a.01.T.E cutler-hammer 4.10 (104) 92 (2337) “d” 25.63 (651) 99 (2515) 20.28 (515) ground bus horizontal cross bus area v ertical bus riser area lifting plate metal enclosed “shipping split” terminal blocks optional “top-of-gear” breaker lifter magnum d...
Technical data effective: may 1998 page 31 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application floor plan/conduit area table a6 – dimensions, in inches (millimeters) fc➀ w d➅ a➃ cc➁ recommended number of power conduits (maximum)➂ 3.5- inch 4-inch 36 (914) 22 (559)...
Technical data effective: may 1998 page 32 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear application table a8 – heat loss data➂ estimated heat loss per breaker (watts) mds-408 mds-608 mds-808 mds-c08 mds-616 mds-816 mds-c16 mds-620 mds-820 mds-c20 mds-632 mds-832 mds-c3...
Technical data effective: may 1998 page 33 td.44a.01.T.E cutler-hammer through the door design — the fol- lowing functions may be performed without the need to open the circuit breaker door: levering the breaker between positions, operate manual charging system and view the spring charge status flag...
Technical data effective: may 1998 page 34 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear features – bus buses and connections — vertical and cross bus ratings in magnum ds switchgear are based on a ul and ansi standard temperature rise of 65 °c above a maximum ambient a...
Technical data effective: may 1998 page 35 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear features – wiring cable compartment — the cable com- partment gives ample room for termi- nating the power cables. Removable top roof sheets allow for easy conduit hub installation....
Technical data effective: may 1998 page 36 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear features – instrumentation/ metering flexibility — magnum ds switchgear allows for a variety of metering options: ■ analog switchboard type meters such as ammeters, voltmeters, watt...
Technical data effective: may 1998 page 37 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear features – breaker contacts the magnum ds has silver tungsten moving contacts and silver graphite stationary contacts. The contacts pro- vide a long-wearing, low-resistance joint. T...
Technical data effective: may 1998 page 38 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear features – breaker magnum ds switchgear – trip units digitrip rms trip unit — the digitrip rms trip units feature a dependent curve that is depicted in the nameplate by a blue shade...
Technical data effective: may 1998 page 39 td.44a.01.T.E cutler-hammer sr ls mot close cs sh b a tr trip cs b15 b13 b27 b11 b10 b26 b14 b12 g r close open control power a28 acn acp no no nc nc no no nc nc no a17 a16 a18 a19 ono oc onc ono a1 a2 a3 a4 a20 a21 a22 a23 oc onc uvr uvr a24 a25 a26 a27 al...
Technical data effective: may 1998 page 40 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear typical specification general — magnum ds indoor low- voltage metal-enclosed switchgear shall consist of a stationary structure assembly and one or more removable magnum ds power ci...
Technical data effective: may 1998 page 41 td.44a.01.T.E cutler-hammer magnum ds metal-enclosed low-voltage switchgear typical specification each breaker shall be equipped with a microprocessor-based, true rms sens- ing trip device. The adjustments shall be: ■ long delay pickup between 40% and 100% ...
Technical data effective: may 1998 page 42 td.44a.01.T.E cutler-hammer www . Electricalpartmanuals . Com.
Technical data effective: may 1998 page 43 td.44a.01.T.E cutler-hammer www . Electricalpartmanuals . Com.
Technical data effective: may 1998 page 44 td.44a.01.T.E printed in u.S.A. Cutler-hammer cutler-hammer magnum ds metal-enclosed low-voltage switchgear www . Electricalpartmanuals . Com.
