Diesel generator ESE 990 TP

Engine manufacturer
Power (kVA)
990 / 891
Power (kW)
792 / 712
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Technical details

The ESE 990 TP diesel generator produced by Endress Group Romania under the Zenessis brand is equipped with PERKINS 4008TAG1A engine, STAMFORD HCI634H alternator and ComAp AMF 20 control system, which ensures the generator starting, parameter control, in manual or automatic system. The generator can be supplied with remote control and monitoring as well as other options. Zenessis power generators are guaranteed for 36 months, up to 2000 operating hours.

Standard features

Diesel engine
Command & control panel with measurement & metal control devices, protection class IP54
Static battery charger
Dynamic battery charging alternator
Controlled thermostat heater for coolant
Oversized start battery
Emergency stop button
Chassis with fuel tank sized for 8hrs of autonomy
Vibration dampers
Fuel level measuring device
Electrical lines protected with tubing & gland
Residential silencer
Access doors on all 4 sides provided with locks
Crane or forklift handling system
Flameproof and soundproof insulation
Protective pads
Metal hinges

Diesel engine


No. of cilinders & arrangement8 in linie
Suction & cooling Turbocharger, intercooler & water cooling
Standby power (kWm)844/1132 kW / CP
Speed (rpm)1500 rpm
Displacement (l)30,5 I
Bore & Stroke (mm)160 x 190 mm
Compression factor13,6 : 1
Regulator Electronic
Total oil capacity (l)153 I
Engine coolant capacity 162 l
Starter system (V.d.c.)24V
Fuel consumption at 100% load (l / h) 195 l / h

Standard features

Alternator Meccalte / Strathon

Frequency (Hz)50 Hz
ConceptWithout brushes, with 4 poles, with a sg. bearing, flexible disc
Power factor0,8
Voltage (V)400 / 230 V
Insulation classH
Protection classIP23
Excitation systemSelf-excited
Certification testtest EN 10204:2001

Control panel

Made in metal box, IP54 degree, with lock. The control panel is equipped with the ComAp AMF20 control module, with the possibility to start and stop the generating set, both in automatic and electric mode. The control panel monitors the power grid and can command and control the ATS panel (automatic transfer switch).

Control panel standard specifications :

The command and control panel is mounted inside the casing, in a metal box with IP 54, equipped with a viewing glass, equipped with:

Control module ComAp AMF 20
Static battery charger
Emergency stop button & circuit breaker fuses control
Overcurrent differential protection
Protection relays

Control panel

1. Left button
2. Right button
3. Start button
4. Fault Reset button
5. Up button
6. Page button
7. 7. Down button
8. Page button
9. Enter button
10. GCB button. 12. MCB button. Works in MAN and TEST modes only
11. MCB button. 12. MCB button. Works in MAN and TEST modes only
12. Consumers
13. GCB On. The green LEDs are in “on” mode if the GCB is closed and the group is functional
14. MCB On. The green LEDs are “on” if the MCB is closed and the network is within the preset parameters.
15. Indicator Status Generator
16. Network Status Indicator
17. Display, 132 x 64 pixels

Command module standard specifications:

Microprocessor control
132 x 64 pixeli LCD display
Programming on front panel as well as through PC software
Control buttons and soft touch navigation
Remote communication via USB or with optional modules via RS232, RS485, Ethernet or SMS
Store 180 events with date and time
Maintenance programming 3 levels
Engine heater control –Optional



1. CompAp AMF 20 control module
2. Circuit Breaker protection
3. Locks
4. Alarm
5. START button ON / OFF
6. Hinges
7. Maintenance schedule
8. Metal box


Engine – engine speed; oil pressure; coolant temperature; running time; battery voltage; maintenance data.
Alternator – voltage (L – L, L – N); current (L1 – L2 – L3); frequency; kW; Pf; kVAr; kWh,kVAh, kVarh; phase sequence.
Main network – voltage (L – L, L – N); frequency, mains ready; mains off; generator set ready, generator set disconnected, active power kW, apparent power kVA, reactive power kVA r, power factor, phase sequence.
Warning – battery faulty charging, low battery voltage, fail to stop, low fuel level, overload, phase reversing, speed sensor failure.
Alarms – low oil pressure, high engine temperature, under / over voltage, under / overfrequency, under / overvoltage, ECU fault -optional.
Status displays – missed start, emergency stop, low oil pressure, high engine temperature, under / overspeed, under / overfrequency, under / overvoltage, oil sensor, phase rotation, overload, overcurrent group, phase reversal.

Static battery charger:

Made with TSD technology, with high efficiency. Protected for short- circuit currents, it can be used as a current source, input voltage 196-264 V, output voltage 27.6 V / 5A or 13.8 V / 5A.


Electrical safety / EMC, BS EN 60950; BS EN 60950 – 6 – 2 EMC; BS EN 61000 – 6 – 4 EMC.


Made of galvanized steel, painted in electrostatic field, soundproofed. It is modularly designed with in-door access doors on all sides of the generator. The exhaust pan is residential type, mounted inside the casing. The housing are designed to optimize the cooling of the engine and alternator assembly, and can be mounted outdoors, providing protection against weathering and low noise levels.


1. Command module
2. View window
3. Access door for control module
4. Points for crane lifting (optional)
5. Spaces for handling with the forklift
6. Usa acces motor si alternato
7. Air intake grills
8. Handles provided with locks
9. Fuel supply bus (optional)
10. „Sleigh chassis” fitted with lifting/pulling holes
11. Emergency button
12. Exhaust Gas Valve
13. Cable access space
14. Hot air outlet grills
15. Protective pads

Dimensions and weight

Dimensions and weight of open genset

Sizes (length x width x height) (mm)6058 x 2438 x 2591
Weight (kg)6670
Fuel tank capacity (liters)1700

Dimensions and weight of the closed genset

Sizes (length x width x height) (mm)6058 x 2438 x 2591
Weight (kg)10200
Fuel tank capacity (liters)1700

Optional features

Electrical panel anti-condensation heating system
Fuel / oil heating system
Coolant heating circulation pump
Oil drain pump
Remote monitoring & control system
AAR transfer panel with 3/4 poles
3/4 pole differential protection
Sokets 400 V/ 230 V
Fuel filter with water detection
Bypass panel – ENDRESS patented invention – OSIM patent 00010 / 2012
Start by remote control
Groundless protection
Interior lightings with switches operated at doors opening
Liquid retention tray
Liquid leakage detection sensor
Motorized ATS, ENDRESS patented invention – OSIM patent 00048 / 2015
Exterior fuel filler cap with lock
Pocket system integrated in the chassis for lifting with forklift
Fire extinguisher with internal housing support
Super soundproof housing
Intake air heating spark plug
Grounding electrodes
Fuel transfer automatic pump
Mobile distribution panel with 4 sockets
Cable reel
Fire detector with automatic shutdown generator set
Fire extinguishing system with inert gas

Optional: RAR approved auto trailer

Model: EGR 12000

Endress Group Romania S.R.L. certifications:

ISO 9001 : 2008, ISO 14001 : 2005, ISO 18001 : 2008.

ZENESSIS generator sets are CE compliant, and are tested according to EU noise legislation 2000/14/EC.

Reference ambient conditions: 1000 mbar; 25° C; 30% relative humidity; power according to ISO 3046 / ISO 8528 standards

Prime power (PRP) – ISO 8528

Primary power (PRP) – is the continuous power that a generator is capable of supplying continuously while supplying a variable electrical load when operating for an unlimited number of hours per year under agreed operating conditions, within the maintenance intervals and procedures prescribed by the manufacturer.

Standby power (ESP) – ISO 8528

Standby power (ESP) is the maximum power available at a variable load, under the operating conditions provided, that a generator is able to provide in case of power failure or under test conditions, maintenance intervals and procedures being performed as prescribed by the manufacturer.

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