ZFQZ Series Frequently Starting and Braking DC Motor Technical Data

Name: ZFQZ Series Frequently Starting and Braking DC Motor
Brand: Jiangsu Wangpai Motor Manufacturing Co., Ltd.
SKU: zfqz-series

ZFQZ Series Frequently Starting and Braking DC Motor, power 37.3~450 kW, voltage 220/400/440/550V, protection IP21S/IP23/IP44 product image

Product introduction

The ZFQZ series frequently-starting-and-braking DC motors have a centre height of 250-450mm and are a new design built on the Z4 series. Their moment of inertia is respectively 45% and 65% of the ZZJ-800 and ZZJ-900 series, suiting the harsh duty of frequent reversing and frequent starting/braking.

They offer excellent overload characteristics, with maximum torque respectively 112% and 117% of the ZZJ-800 and ZZJ-900 series and weight only 65% of the ZZJ-800 series. With a baseplate they reach mounting dimensions consistent with the ZZJ-800 and ZZJ-900 series, and matching shaft extensions can be made by agreement, so they can replace ZZJ-800 and ZZJ-900 products.

The basic duty is continuous (S1); other duties are converted per Table 1. Rated voltage is 220V or 440V, with the corresponding technical data in Table 5 of the catalogue; derived ratings are in Table 6, and other voltage/power classes can be derived. The excitation is separately-excited at 180V or 310V.

Class F insulation with VPI treatment. An octagonal thin-plate laminated frame, all with compensating windings, a vertical-plate commutator and a skewed armature give low moment of inertia, light weight and suitability for thyristor supply.

Protection per GB/T4942.1 is IP21S, IP23 or IP44; cooling per GB/T1993 is self-fan, duct ventilation or air/water cooler, with the standard cooling-air inlet at the drive (non-commutator) end.

Typical applications: harsh duty with frequent reversing and starting/braking, replacing the ZZJ-800 and ZZJ-900 series for industrial drives needing low inertia and high overload.

Selection tip: size by load torque, starting frequency and inertia requirement, match the armature/field voltage (220/440V, separately-excited 180/310V) and rectifier supply, and choose the right protection and cooling.

FAQ: Why ZFQZ for frequent starting/braking? Low inertia and strong overload, with maximum torque 112%/117% of ZZJ-800/900; can it replace the ZZJ series? Yes, via a baseplate reaching the same mounting dimensions and a negotiated shaft extension.

Core Advantages

For frequent starting/braking and reversing
Low moment of inertia with high overload
Replaces the ZZJ-800 / ZZJ-900 series

Outline and Mounting Dimensions

Fig.1 (with self-fan) shows the ZFQZ series outline and mounting dimensions (mm). Dimensions are marked with letters (L1, L, BB, K, C, E, A, AA, AB, AC, AD, BA, GD, H, HA); values are given per frame in the table below (Table 7). Click an image to enlarge.

ZFQZ series outline and mounting dimensions table (Table 7): A B C D E F G GD H K mounting dimensions, AB AC AA BA BB AD HA HD L L1 contour dimensions — Outline and mounting dimensions table (Table 7, mm; values per frame)

Outline and mounting dimensions (Table 7)

The table below is completed from Table 7: one row per frame, with allmounting dimensions (A, B, C, D, E, F, G, GD, H, K) andcontour dimensions (AB, AC, AA, BA, BB, AD, HA, HD, L, L1) filled in. Shared dimensions within a frame family are no longer left blank; only the 450 frame splits into two shaft-diameter groups (450-11~450-32: shaft φ160, G=147; 450-41~450-52: shaft φ170, G=157). The table is wide — scroll horizontally to view.

Frame	Mounting										Contour
Frame	A	B	C	D	E	F	G	GD	H	K	AB	AC	AA	BA	BB	AD	HA	HD	L	L1
ZFQZ-250-081B	406	635	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	726	430	25	1020	1145	1556
ZFQZ-250-082B	406	695	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	786	430	25	1020	1205	1616
ZFQZ-250-091B	406	675	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	766	430	25	1020	1185	1596
ZFQZ-250-092B	406	735	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	826	430	25	1020	1245	1656
ZFQZ-250-11B	406	715	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	806	430	25	1020	1225	1636
ZFQZ-250-12B	406	775	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	866	430	25	1020	1285	1696
ZFQZ-250-21B	406	765	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	856	430	25	1020	1275	1686
ZFQZ-250-22B	406	825	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	916	430	25	1020	1335	1746
ZFQZ-250-31B	406	825	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	916	430	25	1020	1335	1746
ZFQZ-250-32B	406	885	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	976	430	25	1020	1395	1806
ZFQZ-250-41B	406	895	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	986	430	25	1020	1405	1816
ZFQZ-250-42B	406	955	168	Φ85×8	170	22	76	14	250	24	490	524	100	95	1046	430	25	1020	1465	1876
ZFQZ-280-11B	457	762	190	φ95	170	25	86	14	280	24	550	584	110	100	862	455	25	1118	1315	1727
ZFQZ-280-12B	457	852	190	φ95	170	25	86	14	280	24	550	584	110	100	952	455	25	1118	1405	1817
ZFQZ-280-21B	457	822	190	φ95	170	25	86	14	280	24	550	584	110	100	922	455	25	1118	1375	1787
ZFQZ-280-22B	457	912	190	φ95	170	25	86	14	280	24	550	584	110	100	1012	455	25	1118	1465	1877
ZFQZ-280-31B	457	892	190	φ95	170	25	86	14	280	24	550	584	110	100	992	455	25	1118	1445	1857
ZFQZ-280-32B	457	982	190	φ95	170	25	86	14	280	24	550	584	110	100	1082	455	25	1118	1535	1947
ZFQZ-280-41B	457	972	190	φ95	170	25	86	14	280	24	550	584	110	100	1072	455	25	1118	1525	1937
ZFQZ-280-42B	457	1062	190	φ95	170	25	86	14	280	24	550	584	110	100	1162	455	25	1118	1615	2027
ZFQZ-315-081	508	757	216	φ120	210	32	109	18	315	28	620	654	115	110	867	488	30	1226	1402	1561
ZFQZ-315-082	508	847	216	φ120	210	32	109	18	315	28	620	654	115	110	957	488	30	1226	1492	1651
ZFQZ-315-091	508	817	216	φ120	210	32	109	18	315	28	620	654	115	110	927	488	30	1226	1462	1621
ZFQZ-315-092	508	907	216	φ120	210	32	109	18	315	28	620	654	115	110	1017	488	30	1226	1552	1711
ZFQZ-315-11	508	887	216	φ120	210	32	109	18	315	28	620	654	115	110	997	488	30	1226	1532	1691
ZFQZ-315-12	508	977	216	φ120	210	32	109	18	315	28	620	654	115	110	1087	488	30	1226	1622	1781
ZFQZ-315-21	508	967	216	φ120	210	32	109	18	315	28	620	654	115	110	1077	488	30	1226	1612	1771
ZFQZ-315-22	508	1057	216	φ120	210	32	109	18	315	28	620	654	115	110	1167	488	30	1226	1702	1861
ZFQZ-315-31	508	1057	216	φ120	210	32	109	18	315	28	620	654	115	110	1167	488	30	1226	1702	1861
ZFQZ-315-32	508	1147	216	φ120	210	32	109	18	315	28	620	654	115	110	1257	488	30	1226	1792	1951
ZFQZ-315-41	508	1157	216	φ120	210	32	109	18	315	28	620	654	115	110	1267	488	30	1226	1802	1961
ZFQZ-315-42	508	1247	216	φ120	210	32	109	18	315	28	620	654	115	110	1357	488	30	1226	1892	2051
ZFQZ-355-081	610	818	254	φ130	250	32	119	18	355	28	700	734	130	208	1032	701	30	1368	1539	1654
ZFQZ-355-082	610	908	254	φ130	250	32	119	18	355	28	700	734	130	208	1122	701	30	1368	1629	1744
ZFQZ-355-091	610	888	254	φ130	250	32	119	18	355	28	700	734	130	208	1102	701	30	1368	1609	1724
ZFQZ-355-092	610	978	254	φ130	250	32	119	18	355	28	700	734	130	208	1192	701	30	1368	1699	1814
ZFQZ-355-11	610	968	254	φ130	250	32	119	18	355	28	700	734	130	208	1182	701	30	1368	1689	1804
ZFQZ-355-12	610	1058	254	φ130	250	32	119	18	355	28	700	734	130	208	1272	701	30	1368	1779	1894
ZFQZ-355-21	610	1058	254	φ130	250	32	119	18	355	28	700	734	130	208	1272	701	30	1368	1779	1894
ZFQZ-355-22	610	1148	254	φ130	250	32	119	18	355	28	700	734	130	208	1362	701	30	1368	1869	1984
ZFQZ-355-31	610	1158	254	φ130	250	32	119	18	355	28	700	734	130	208	1372	701	30	1368	1879	1994
ZFQZ-355-32	610	1248	254	φ130	250	32	119	18	355	28	700	734	130	208	1462	701	30	1368	1969	2084
ZFQZ-355-41	610	1268	254	φ130	250	32	119	18	355	28	700	734	130	208	1482	701	30	1368	1989	2104
ZFQZ-355-42	610	1358	254	φ130	250	32	119	18	355	28	700	734	130	208	1572	701	30	1368	2079	2194
ZFQZ-400-11	686	959	280	φ150	250	36	138	20	400°	35	790	830	137	246	1206	750	35	1620	1732	1817
ZFQZ-400-12	686	1079	280	φ150	250	36	138	20	400°	35	790	830	137	246	1326	750	35	1620	1852	1937
ZFQZ-400-21	686	1039	280	φ150	250	36	138	20	400°	35	790	830	137	246	1285	750	35	1620	1812	1897
ZFQZ-400-22	686	1159	280	φ150	250	36	138	20	400°	35	790	830	137	246	1406	750	35	1620	1932	2017
ZFQZ-400-31	686	1129	280	φ150	250	36	138	20	400°	35	790	830	137	246	1375	750	35	1620	1902	1987
ZFQZ-400-32	686	1249	280	φ150	250	36	138	20	400°	35	790	830	137	246	1495	750	35	1620	2022	2107
ZFQZ-400-41	686	1229	280	φ150	250	36	138	20	400°	35	790	830	137	246	1475	750	35	1620	2002	2087
ZFQZ-400-42	686	1349	280	φ150	250	36	138	20	400°	35	790	830	137	246	1595	750	35	1620	2122	2207
ZFQZ-450-11	800	1061	315	φ160	300	40	147	22	450°	35	890	924	160	285	1399	800	40	1720	1944	2050
ZFQZ-450-12	800	1181	315	φ160	300	40	147	22	450°	35	890	924	160	285	1519	800	40	1720	2064	2070
ZFQZ-450-21	800	1151	315	φ160	300	40	147	22	450°	35	890	924	160	285	1489	800	40	1720	2034	2140
ZFQZ-450-22	800	1271	315	φ160	300	40	147	22	450°	35	890	924	160	285	1609	800	40	1720	2154	2260
ZFQZ-450-31	800	1251	315	φ160	300	40	147	22	450°	35	890	924	160	285	1589	800	40	1720	2134	2240
ZFQZ-450-32	800	1371	315	φ160	300	40	147	22	450°	35	890	924	160	285	1709	800	40	1720	2254	2360
ZFQZ-450-41	800	1361	315	φ170	300	40	157	22	450°	35	890	924	160	285	1699	800	40	1720	2294	2350
ZFQZ-450-42	800	1481	315	φ170	300	40	157	22	450°	35	890	924	160	285	1819	800	40	1720	2414	2470
ZFQZ-450-51	800	1481	315	φ170	300	40	157	22	450°	35	890	924	160	285	1819	800	40	1720	2414	2470
ZFQZ-450-52	800	1601	315	φ170	300	40	157	22	450°	35	890	924	160	285	1939	800	40	1720	2534	2590

Note: "-" means the catalogue leaves this item blank for that frame.

Technical Data

The rated voltage is 220V or 440V; the corresponding data is shown in Table 5. Derived data supplied to customer requirements is shown in Table 6. Other voltage and power classes can be derived and should be agreed at order. At base speed the motor may run at the maximum running torque shown for 60 seconds.

Technical Data (Table 5: Rated Voltage 220V / 440V)

Total 9 rows (including different voltage/weak-magnetic variants of the same frame), per the official catalogue.

Type	Rated power	Rated voltage	Rated current	Rated speed	Weak magnetic speed	Rated torque	Max. running torque	Starting torque	Armature circuit resistance	Armature circuit inductance	Exciting power	Moment of inertia	Weight with blower
Type	KW	V	A	r/min		KNm			mΩ(20℃)	mH	KW	Kgm²	Kg
ZFQZ-250-081B	37.3	220	220	575	1725	0.62	1.86	2.17	130.7	0.93	2.10	0.95	770
ZFQZ-250-081B	37.3	440	112	575	1150	0.62	1.86	2.17	541.4	3.7	2.10	0.95	770
ZFQZ-250-21B	52	220	288	550	1650	0.91	2.73	3.19	77.1	0.62	2.75	1.4	960
ZFQZ-250-21B	52	440	144	550	1100	0.91	2.73	3.19	329.5	3.4	2.75	1.4	960
ZFQZ-280-12B	75	220	415	515	1300	1.39	4.17	4.87	54.8	0.51	3.1	2.5	1230
ZFQZ-315-082	112	220	614	500	1250	2.14	6.42	7.49	34.4	0.48	4.5	4.1	1595
ZFQZ-315-22	150	220	795	480	1200	2.99	8.97	10.5	22.5	0.39	4.35	6.0	2090
ZFQZ-355-092	186	220	982	435	1100	4.09	12.3	14.3	17.7	0.34	4.2	9.2	2650
ZFQZ-355-42	280	440	720	390	780	6.86	20.6	24.0	42.3	0.90	6.5	15	3850

Technical Data (Table 6: Derived Voltage / Power)

Total 33 rows, per the official catalogue.

Type	Rated power	Rated voltage	Rated current	Rated speed	Rated torque	Max. running torque	Starting torque	Armature circuit resistance	Armature circuit inductance	Exciting power	Moment of inertia	Weight with blower
Type	KW	V	A	r/min	KNm			mΩ(20℃)	mH	KW	Kgm²	Kg
ZFQZ-250-31B	92	400	260	880	1.0	3.0	3.5	96.1	0.99	2.85	1.55	1060
ZFQZ-280-21B	75	550	171	515	1.39	4.17	4.87	299.2	3.5	2.5	2.25	1350
ZFQZ-280-32B	170	440	430	900	1.8	5.41	6.31	53.4	1.5	3.0	3.0	1500
ZFQZ-315-091	112	550	251	500	2.14	6.42	7.49	183.6	3.1	3.5	4.5	1755
ZFQZ-315-12	160	440	410	600	2.55	7.65	8.93	69.8	1.0	4.68	5.3	1900
ZFQZ-315-12	160	550	345	600	2.548	7.64	8.92	97.1	1.0	4.68	5.3	1900
ZFQZ-315-11	200	440	525	810	2.36	7.08	8.26	43.61	0.79	4.68	5.3	1900
ZFQZ-315-11	112	440	297	400	2.67	8.01	9.35	137	2.1	4.68	5.3	1900
ZFQZ-315-22	230	220	1175	705	3.12	9.35	11.0	10.5	1.0	4.3	6.0	2090
ZFQZ-315-21	150	660	260	480	2.98	8.95	10.4	199	3.3	4.35	6.0	2090
ZFQZ-315-32	320	440	785	900	3.4	10.2	11.9	21.1	0.6	4.6	7.0	2300
ZFQZ-315-32	280	660	465	750	3.56	10.7	12.5	68.4	1.3	4.6	7.0	2300
ZFQZ-315-42	315	600	570	800	3.76	11.3	13.2	44.0	0.8	5.2	7.7	2530
ZFQZ-315-42	315	440	780	750	4.0	12.0	13.5	23.9	0.51	5.2	7.7	2530
ZFQZ-315-42	284	400	785	680	4.0	12.0	13.5	25.6	0.52	5.2	7.7	2530
ZFQZ-355-12	315	660	510	880	3.42	10.3	12.0	42.0	0.7	4.7	10.5	2900
ZFQZ-355-22	450	660	735	900	4.78	14.3	16.7	64.2	1.0	5.6	11.5	3180
ZFQZ-355-22	370	440	930	650	5.44	16.3	19.0	25.3	0.6	5.6	11.5	3180
ZFQZ-355-32	450	725	670	750	5.73	17.2	20.0	41.1	1.0	6.0	13	3500
ZFQZ-355-32	315	440	800	500	6.02	18.1	21.0	30.4	0.88	6.0	13	3500
ZFQZ-355-32	315	660	508	750	4.01	12.3	14.0	35.3	1.49	6.0	13	3500
ZFQZ-355-42	361	600	665	550	6.27	18.8	22	45.1	1.1	6.5	15	3850
ZFQZ-355-42	355	440	895	500	6.78	20.3	23.7	26.8	0.74	6.5	15	3850
ZFQZ-355-42	418	725	630	600	6.65	20.0	23.3	51.5	1.2	6.5	15	3850
ZFQZ-400-32	440	660	725	600	7.0	21.0	24.5	37.8	1.0	6.4	21	4920
ZFQZ-400-42	500	660	810	708	6.74	20.2	23.6	26.0	0.6	7.1	23.5	5320
ZFQZ-400-42	418	725	635	530	7.53	22.6	26.4	54.1	1.5	7.1	23.5	5320
ZFQZ-400-42	400	440	1020	410	9.32	28.0	32.6	29.0	0.8	7.1	23.5	5320
ZFQZ-400-42	205	420	570	280	6.99	21.0	24.5	57.7	1.3	7.1	23.5	5320
ZFQZ-450-31	420	660	700	430	9.33	28.0	32.6	47.2	1.0	7.1	39	6000
ZFQZ-450-31	220	370	730	180	11.6	35.0	40.0	58.1	1.1	7.1	39	6000
ZFQZ-450-42	600	725	880	600	9.55	28.7	33.4	23.9	0.7	7.5	43.5	6700
ZFQZ-450-42	500	660	810	500	9.55	28.7	33.4	27.8	0.8	7.5	43.5	6700

Related series

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