Technical specification

Table 1

Working mode	See table 2
Useful capacity, kW (hp)	350 (480)
Maximum discharge pressure, MPa (kgf/cm2)	25 (250)
Power unit (high pressure pump drive) on the basis of YaMZ-845.10 diesel engine:
- nominal power (at rotation frequency n = 2100 min-1), kW	537
- operational rotation frequency of the power unit shaft, min-1	1300...2100
Wide-band hydrotransmission
Torque converter	Complex, three-wheeled
- max. transformation ratio	1,7
Clutch control	Manual
Gearbox	Mechanical, double-flow, synchronized
Gear ratios:
- at I-st gear	1,526
- at II-nd gear	1,0
- control	Manual
Angular transmission
- gear type	Bevel, with scroll toothing
- gear-ratio	1,5
High pressure pump
- type	N3P-25S
- drive power, kW	475
- number of pistons, ea	3
Piston diameters, mm	According to the order
a) in delivery set	190
b) in spare parts set	170, 180
- power end gear ratio	4,86
Nominal bore of manifold pipelines, mm:
- suction manifold	150
- discharge manifold	76
Booster pump (centrifugal)
a) propeller diameter	290
Fluid heater type	14.8106
Overall dimensions, (LxBxH), L - length, B - width, H - height, mm:	9 000 ? 3 100 ? 2 900
Weight, kg	21 000

Table 2

Angular transmission gears	Number of piston double strokes of N3P-25S pump	Piston diameter	Delivery Q and corresponding maximum permissible discharge pressure Pmax
			Q, l/sec	Pmax, Mpa
I	60 - 105	120	6,8 - 11,9	25
		130	8,0 - 13,9	25 - 23,4
		140	9,2 - 15,4	23,9 - 20,2
		150	10,6 - 18,6	20,8 - 17,6
		160	12,1 - 21,1	18,3 - 15,5
		170	13,6 - 23,8	16,2 - 13,7
		180	15,3 - 26,7	14,4 - 12,2
		190	17,0 - 29,8	9,5
II	90 - 160	120	10,2 - 18,1	22,8 - 21,8
		130	11,9 - 21,2	19,4 - 18,5
		140	13,9 - 24-6	16,7 - 16,0
		150	15,9 - 28,3	14,6 - 13,9
		160	18,1 - 32,2	12,8 - 12,2
		170	20,4 - 36,3	11,4 - 10,8
		180	22,9 - 40,7	10,1 - 9,7
		190	25,5 - 45,2	9,1 - 8,7